{"product_id":"2-inch-m48-extension-tube-kit-with-5-rings-for-bac","title":"2-Inch M48 Extension Tube Kit With 5 Rings For Backfocus, Eyepiece Projection And Flatteners, Precise 5, 7, 15, 20 And 30 Mm Spacing, Total Range Up To 77 Mm, M48 0.75 Male And Female Threads, DSLR SLR Ready","description":"\u003cdiv\u003eSet of five M48 2-Inch (50.8 mm) rings for backfocus\u003cbr\u003e\nFive M48 rings stack for precise backfocus 5-77 mm total \u003cp\u003eThis compact set adds precise spacing between a camera body and 2\" accessories, ideal for astrophotography, eyepiece projection, and reducer\/flatteners. The true 2\" M48 interface ensures broad compatibility with 2\" devices that use the 48 mm filter thread.\u003c\/p\u003e \u003cp\u003e✅ Five extension rings: 5 mm, 7 mm, 15 mm, 20 mm, 30 mm \u003cbr\u003e\n✅ Double-threaded M48 0.75 on each ring, male on one side and female on the other \u003cbr\u003e\n✅ True 2 in interface with 48 mm filter thread compatibility for reducers, flatteners, and filter holders \u003cbr\u003e\n✅ All-metal anodized aluminum construction resists wear and reflections \u003cbr\u003e\n✅ Maintains optical alignment with tight tolerances for repeatable spacing \u003cbr\u003e\n✅ QC tested and ready for field use with consistent alignment \u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is a 2 inch extension tube kit used for in astrophotography and eyepiece projection backfocus? This handy kit helps you dial in backfocus and keep your equipment aligned. - Precise backfocus adjustment from 5 mm to 77 mm across selectable spacings\n- Broad compatibility with 2\" accessories using the M48 filter thread\n- Durable all-metal anodized build for field work\n- Keeps the optical axis straight when changing spacings\u003c\/p\u003e✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48939175575787,"sku":"VXB0FNCDLJQG","price":109.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61cqFppYTvL.jpg?v=1782398912","url":"https:\/\/vxb.com\/products\/2-inch-m48-extension-tube-kit-with-5-rings-for-bac","provider":"VXB Bearings","version":"1.0","type":"link"}