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M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
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M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
Achieve fine adjustment from 5 mm up to 77 mm total for perfect astrophotography backfocus.
M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set
Item #: 167543217

M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set

Item #: 167543217

BDT 4247

BDT 8319

Price Details

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*All items will import from US

49%

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Order now and get it around Wednesday, July 22
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Achieve fine adjustment from 5 mm up to 77 mm total for perfect astrophotography backfocus.
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What Stands Out

Versatile Compatibility
Designed for DSLR and SLR cameras, this extension tube kit accommodates various ring sizes for enhanced backfocus and versatility in photography, ensuring users can capture sharp images with different equipment.
Quality Build
Constructed with high-quality materials, this kit features M48×0.75 threads ensuring durability and reliable connections, which greatly enhance the performance of optics and extend the lifespan of your gear.
Complete Set
The kit includes five extension rings (5mm to 30mm), providing photographers with a comprehensive solution for precise adjustments in distance, allowing for greater control over depth of field and focus.

Product Details

Shop M48 2-Inch Extension Tube Kit 5/7/15/20/30mm Rings M480.75 Male & Female Threads for DSLR/SLR Backfocus, Flatteners & Eyepieces 5-Ring Set online at a best price in Bangladesh. B0FNCDLJQG
  • **Dial In Precise Backfocus:** Five rings (5/7/15/20/30 mm) stack in any combination to solve spacing for astrophotography and eyepiece projection—achieve fine adjustment from 5 mm up to 77 mm total.
  • **True 2" Interface (M48×0.75):** Double-threaded male & female M48 on every ring for easy stacking and broad compatibility with 2" accessories that use the 48 mm filter thread (flatteners, reducers, filter holders, OAGs). *Note: M48 (2" filter thread), not M42/T-2.*
  • **All-Metal, Anodized Build:** Durable aluminum construction with a hard, matte anodized finish resists wear and reflections; precisely cut threads engage smoothly to help prevent binding or cross-threading.
  • **Maintain Optical Alignment:** Tight tolerances help keep the optical train square and repeatable when adding or removing rings—ideal for critical spacing on reducers/flatteners and camera adapters.
  • **QC’d & Ready for the Field:** Each set is test-assembled and visually inspected for fit and finish before packing, so you can focus on capturing sharp, high-contrast images.
Focus TypeAuto Focus
FinderscopeStraight-Through
Brandstarboosa
ManufacturerStarboosa
Manufacturer Part NumberSB106871
Built-In Media2 inch extension ring (5.1 cm)
Objective Lens Diameter51 Millimeters
Item Dimensions D x W x H5"D x 4"W x 5"H (12.7 x 10.2 x 12.7 cm)
Product Dimensions (L x W x H)5"D x 4"W x 5"H (12.7 x 10.2 x 12.7 cm)
Number of Items1

What's in the box

2 inch extension ring

Who Should Buy?

Suitable For
  • Astrophotographers

    These users need precise backfocus for optimal image quality when using DSLR or SLR cameras in astrophotography.

  • Telescope Users

    Ideal for astronomers who require additional extension for eyepieces, flatteners, or adapters in their telescope setups.

  • Photography Enthusiasts

    Perfect for photographers seeking to adjust backfocus for various lenses and achieve better image quality with their setups.

Not Suitable For
  • Casual Users

    Not ideal for hobbyists who do not need specific adjustments in their photography or telescope setups.

  • Mobile Photographers

    Unsuitable for photographers who prefer a compact and portable setup rather than using multiple extension tubes.

  • Budget Shoppers

    May not be the best choice for those looking for lower-cost alternatives for basic photography or telescope needs.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the purpose of the M48 2-Inch Extension Tube Kit?

    Answer: The M48 2-Inch Extension Tube Kit is designed to extend your camera's backfocus, enhancing compatibility with flatteners and eyepieces. This ensures that your image remains sharp across the entire field of view. It is particularly beneficial for astrophotography or landscape photography where precise focus and alignment are critical.
  • Question: What thread size do the M48 extension tubes have?

    Answer: The M48 extension tubes feature M48×0.75 male and female threads, which are standard for many astrophotography and DSLR applications. This threading allows for reliable connections between various components, securing them in place and preventing any light leaks during photography sessions.
  • Question: Can the extension tubes be used with any DSLR or SLR camera?

    Answer: Yes, the M48 extension tubes are designed for compatibility with a wide range of DSLR and SLR cameras. When paired with appropriate mount adapters, these extension tubes provide versatility in achieving the desired backfocus for numerous photographic needs, from macro to wide-angle, ensuring flexibility in your shooting options.
  • Question: What sizes do the extension rings come in for the kit?

    Answer: The kit includes extension rings of varying sizes: 5mm, 7mm, 15mm, 20mm, and 30mm. This diversity allows photographers to combine rings as needed to achieve the correct backfocus distance for their specific equipment setup, enhancing creative possibilities and accommodating various lenses.
  • Question: Is the M48 extension tube kit suitable for astrophotography?

    Answer: Absolutely! The M48 extension tube kit is particularly favored in astrophotography as it allows adjustments for backfocus requirements, ensuring optimal distances between your camera and telescope or eyepiece. This ensures that stars and celestial objects are captured sharply, greatly enhancing the quality of astrophotographic images.
  • Question: How does the extension tube affect lens performance?

    Answer: Using extension tubes can help improve lens performance by adjusting the focal distance, allowing for better light gathering and focus capabilities. This is especially useful in macro photography where finer details are critical and can lead to increased sharpness and detail in your images.
  • Question: Are the extension tubes made from durable materials?

    Answer: Yes, the M48 extension tubes are constructed from high-quality materials that ensure durability and reliability. This durability is essential for both professional and amateur photographers who require gear that can withstand frequent use and varying environmental conditions without compromising performance.
  • Question: Can I stack multiple extension tubes together?

    Answer: Yes, you can stack multiple extension tubes from the kit to achieve the desired focal length. This stacking allows for greater flexibility in your photography setups, letting you tailor the tube configuration to fit specific shooting scenarios, whether shooting close-ups or distant celestial objects.
  • Question: Where can I buy the M48 2-Inch Extension Tube Kit in Bangladesh?

    Answer: You can purchase the M48 2-Inch Extension Tube Kit from Ubuy in Bangladesh. Ubuy offers a wide range of products, ensuring you have access to the latest photography equipment and accessories. Enjoy a seamless shopping experience while finding everything you need for your photography endeavors.

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“The product received very good packaging & safe…Thank You”

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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”

12 June 2026 · via Trustpilot
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BDT 4247

BDT 8319

Order now and get it around Wednesday, July 22

QTY:

Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • Five extension rings (5/7/15/20/30 mm) for precise backfocus.
  • Double-threaded male and female M48 for easy stacking.
  • Durable aluminum build with anodized finish to resist wear.
  • Maintains optical alignment with tight tolerances.
  • QC’d and ready for the field with guaranteed fit and finish.

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