{"product_id":"4-inch-arca-swiss-clamp-short-black-knob-45mm","title":"4.00\" Arca-Swiss Compatible Quick Release Clamp | Short Black Knob","description":"\u003c!-- ===================== GRAY BANNER ===================== --\u003e\n\u003cdiv style=\"background:#e5e5e5;padding:12px 15px;margin-bottom:18px;\"\u003e\n    \u003cstrong\u003e4.00 Inch Arca-Swiss Compatible Quick Release Clamp | Short Black Knob \u0026amp; 45mm Spacing\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003c!-- ===================== SEO BLOCK (TOP) ===================== --\u003e\n\u003ch1\u003e4.00\" Arca-Swiss Compatible Quick Release Clamp | Short Black Knob\u003c\/h1\u003e\n\u003cp\u003e\n    The 4.00-inch jaw length \u003cstrong\u003eArca-Swiss compatible clamp\u003c\/strong\u003e is a precision-engineered mounting solution designed for photographers who require absolute security and a low-profile aesthetic. Featuring a compact \u003cstrong\u003eshort black knob\u003c\/strong\u003e and a versatile mounting interface, this clamp delivers superior stability for telephoto lenses, macro rails, and modular camera rigs.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003c!-- ===================== QUICK OVERVIEW ===================== --\u003e\n\u003ch2\u003eKey Features \u0026amp; Quick Overview\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eExtended 4.00\" Jaws:\u003c\/strong\u003e Provides an expansive surface area for maximum contact and grip with professional Arca-type plates and rails.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLow-Profile Short Black Knob:\u003c\/strong\u003e Compact design reduces bulk while the captive mechanism ensures the knob cannot be lost in the field.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision Dual Mounts:\u003c\/strong\u003e Two outside holes are tapped 1\/4-20 and spaced exactly 45mm apart for specialized multi-point attachments.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVersatile Mounting Interface:\u003c\/strong\u003e Center socket is countersunk on top for 1\/4-20 or M6 screws and is also natively threaded for 3\/8-16 studs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSafety Relief Grooves:\u003c\/strong\u003e 2.6mm deep relief grooves ensure compatibility with Arca-type plates featuring safety stops, preventing gear \"free fall\" if the clamp is partially open.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAnti-Twist Integration:\u003c\/strong\u003e The back side features a dedicated groove to match professional ball head connections and prevent rotation during use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- ===================== PRODUCT DESCRIPTION ===================== --\u003e\n\u003ch2\u003eProfessional Arca-Type Quick Release Solution\u003c\/h2\u003e\n\u003cp\u003e\n    Upgrade your camera support gear with a \u003cstrong\u003eprofessional Arca-Swiss clamp\u003c\/strong\u003e built for the most demanding technical environments. Precision CNC machined from aircraft-grade 6061-T6 aluminum, this 4.00-inch clamp offers the rock-solid connection required for long-lens shooting and macro setups. Its \"Micro-Vise\" design ensures a tenacious, twist-free grip on any compatible plate from major brands like RRS, Kirk, Wimberley, and Markins.\n\u003c\/p\u003e\n\u003cp\u003e\n    \u003cstrong\u003eAdvanced Safety and Field Reliability:\u003c\/strong\u003e This clamp is engineered for total system interoperability and maximum field reliability. The integrated 2.6mm deep safety relief grooves serve as a critical fail-safe against accidental gear drops, while the captive hardware ensures you are never stranded on a location shoot due to a missing knob. Finished in a durable black hard-coat anodize, this high-performance clamp is built to provide years of professional service.\n\u003c\/p\u003e\n\n\u003c!-- ===================== SPECIFICATIONS ===================== --\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eJaw Length:\u003c\/strong\u003e 4.00 Inches (101.6mm)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMounting Holes:\u003c\/strong\u003e Two 1\/4-20 tapped holes (45mm spacing)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCenter Threading:\u003c\/strong\u003e Threaded 3\/8-16 and countersunk for M6\/1\/4-20\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKnob Type:\u003c\/strong\u003e Short Black (Captive Design)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRelief Groove Depth:\u003c\/strong\u003e 2.6mm\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e CNC Machined 6061-T6 Aluminum\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Hard-Coat Anodized\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in the USA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hejnar Photo","offers":[{"title":"Default Title","offer_id":67701597896809,"sku":"F64ab","price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/1278\/9353\/files\/F64ab-2.jpg?v=1792110992","url":"https:\/\/www.hejnarphotostore.com\/products\/4-inch-arca-swiss-clamp-short-black-knob-45mm","provider":"Hejnar Photo","version":"1.0","type":"link"}