{"product_id":"m54-x-075-threaded-extension-tube-aluminum-spacer-telescope","title":"M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm","description":"\n\u003ch2\u003eM54 x 0.75 Threaded Extension Tube – Aluminum Spacer for Telescope \u0026amp; Imaging Trains\u003c\/h2\u003e\n\u003cp\u003eFine-tune your telescope or imaging train with this precision-machined \u003cstrong\u003eM54 x 0.75 threaded extension tube\u003c\/strong\u003e. Available in eight thickness options — 3mm, 5mm, 7mm, 10mm, 12mm, 15mm, 20mm, and 30mm — this compact aluminum spacer lets you dial in the exact back-focus distance your optical setup demands. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eM54 x 0.75 Male \u0026amp; Female Threads:\u003c\/strong\u003e Both ends feature matching M54 x 0.75mm threads, forming a clean, secure connection that keeps all components perfectly aligned within your imaging or telescope train.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Spacing Control:\u003c\/strong\u003e Choose from eight thickness options (3mm–30mm) to achieve the exact back-focus or spacer distance required — no guesswork, no compromise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnodized Aluminum Construction:\u003c\/strong\u003e A lightweight yet durable aluminum body with a matte black interior texture helps minimize internal reflections along the optical path for cleaner results.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Profile:\u003c\/strong\u003e Outer diameter of approx. 5.65 cm (2.22 inches) integrates seamlessly into standard imaging rigs and telescope focuser trains.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle Piece per Option:\u003c\/strong\u003e Each order includes one extension tube in your chosen thickness, making it easy to build the exact spacing stack your setup needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread (Internal \u0026amp; External)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM54 x 0.75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 5.65 cm \/ 2.22 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Thicknesses\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3mm, 5mm, 7mm, 10mm, 12mm, 15mm, 20mm, 30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMatte black interior\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Piece\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × M54 x 0.75 Extension Tube (thickness of your choice)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePlease allow ±1–2 mm measurement tolerance due to manual measurement.\u003c\/li\u003e\n  \u003cli\u003eMonitor color settings may cause slight variation from the actual product color.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/hex-nut-bolt-extractor-tool-kit-10-piece\"\u003e10-Pc Hex Nut \u0026amp; Bolt Extractor Kit 9–19mm | HIP Tools\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2-inch-8-piece-hex-short-socket-set-vanadium-steel\"\u003e1\/2\" Drive 8-Piece Hex Short Socket Set – Vanadium Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/105-degree-right-angle-driver-with-hex-screwdriver-bit\"\u003e105° Right Angle Driver with 1\/4\" Hex Screwdriver Bit | HIP\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What thread standard does this extension tube use?\u003c\/h4\u003e\n\u003cp\u003eA: This extension tube features M54 x 0.75mm male and female threads on both ends, making it compatible with telescopes, camera imaging trains, and accessories that share the M54 x 0.75 thread standard.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I stack multiple extension tubes together?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. Because both ends carry matching M54 x 0.75mm threads, multiple tubes can be threaded together to achieve any custom back-focus distance your optical configuration requires.\u003c\/p\u003e\n\u003ch4\u003eQ: Why does the interior have a matte finish?\u003c\/h4\u003e\n\u003cp\u003eA: The matte black interior texture is designed to reduce stray light reflections along the optical path, helping maintain image contrast and clarity in your imaging or telescope setup.\u003c\/p\u003e\n\u003ch4\u003eQ: How many extension tubes are included per order?\u003c\/h4\u003e\n\u003cp\u003eA: Each order includes one (1) extension tube in the thickness you select at checkout. If you need multiple spacer lengths, simply order each thickness separately.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What thread standard does this extension tube use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This extension tube features M54 x 0.75mm male and female threads on both ends, making it compatible with telescopes, camera imaging trains, and accessories that share the M54 x 0.75 thread standard.\"}}, {\"@type\": \"Question\", \"name\": \"Can I stack multiple extension tubes together?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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If you need multiple spacer lengths, simply order each thickness separately.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/rw8eae-v1.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Tools \u0026 Household\", \"item\": \"https:\/\/rw8eae-v1.myshopify.com\/collections\/tools-household\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"M54 x 0.75 Threaded Extension Tube – Aluminum Spacer 3–30mm\", \"item\": \"https:\/\/rw8eae-v1.myshopify.com\/products\/m54-x-075-threaded-extension-tube-aluminum-spacer-telescope\"}]}\u003c\/script\u003e","brand":"HIP","offers":[{"title":"30 mm \/ CN","offer_id":46305518518506,"sku":"1005013100261413-30 mm-CN","price":17.29,"currency_code":"USD","in_stock":true},{"title":"10 mm \/ CN","offer_id":46305518551274,"sku":"1005013100261413-10 mm-CN","price":12.99,"currency_code":"USD","in_stock":true},{"title":"3 mm \/ CN","offer_id":46305518584042,"sku":"1005013100261413-3 mm-CN","price":8.13,"currency_code":"USD","in_stock":true},{"title":"5 mm \/ CN","offer_id":46305518616810,"sku":"1005013100261413-5 mm-CN","price":9.19,"currency_code":"USD","in_stock":true},{"title":"20 mm \/ CN","offer_id":46305518649578,"sku":"1005013100261413-20 mm-CN","price":16.15,"currency_code":"USD","in_stock":true},{"title":"7 mm \/ CN","offer_id":46305518682346,"sku":"1005013100261413-7 mm-CN","price":11.86,"currency_code":"USD","in_stock":true},{"title":"12 mm \/ CN","offer_id":46305518715114,"sku":"1005013100261413-12 mm-CN","price":14.02,"currency_code":"USD","in_stock":true},{"title":"15 mm \/ CN","offer_id":46305518747882,"sku":"1005013100261413-15 mm-CN","price":15.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4590\/4618\/files\/S28a719f6314f40d5b09891b1ce5d7f90Q.webp?v=1789879214","url":"https:\/\/hipcustomerservice.com\/products\/m54-x-075-threaded-extension-tube-aluminum-spacer-telescope","provider":"HIP","version":"1.0","type":"link"}