4.00" Arca-Swiss Compatible Quick Release Clamp | Short Black Knob

The 4.00-inch jaw length Arca-Swiss compatible clamp is a precision-engineered mounting solution designed for photographers who require absolute security and a low-profile aesthetic. Featuring a compact short black knob and a versatile mounting interface, this clamp delivers superior stability for telephoto lenses, macro rails, and modular camera rigs.

Key Features & Quick Overview

• Extended 4.00" Jaws: Provides an expansive surface area for maximum contact and grip with professional Arca-type plates and rails.
• Low-Profile Short Black Knob: Compact design reduces bulk while the captive mechanism ensures the knob cannot be lost in the field.
• Precision Dual Mounts: Two outside holes are tapped 1/4-20 and spaced exactly 45mm apart for specialized multi-point attachments.
• Versatile Mounting Interface: Center socket is countersunk on top for 1/4-20 or M6 screws and is also natively threaded for 3/8-16 studs.
• Safety Relief Grooves: 2.6mm deep relief grooves ensure compatibility with Arca-type plates featuring safety stops, preventing gear "free fall" if the clamp is partially open.
• Anti-Twist Integration: The back side features a dedicated groove to match professional ball head connections and prevent rotation during use.

Professional Arca-Type Quick Release Solution

Upgrade your camera support gear with a professional Arca-Swiss clamp 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.

Advanced Safety and Field Reliability: 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.

Technical Specifications

• Jaw Length: 4.00 Inches (101.6mm)
• Mounting Holes: Two 1/4-20 tapped holes (45mm spacing)
• Center Threading: Threaded 3/8-16 and countersunk for M6/1/4-20
• Knob Type: Short Black (Captive Design)
• Relief Groove Depth: 2.6mm
• Material: CNC Machined 6061-T6 Aluminum
• Finish: Black Hard-Coat Anodized
• Origin: Made in the USA