3.25" Arca-Swiss Compatible Quick Release Clamp | Long Black Hex Knob

The 3.25-inch jaw length Arca-Swiss compatible clamp is a versatile mounting solution engineered for maximum torque and precision. Featuring a long black captive knob with an integrated 5mm hex wrench socket, this clamp allows for extreme tightening force while maintaining a low-profile footprint that won't interfere with flat mounting surfaces.

Quick Overview & Key Features

• Dual-Drive Long Black Knob: Ergonomic knob design includes a 5mm hex wrench socket for added leverage and security.
• Surface Clearance Design: Specifically engineered to be mounted on flat surfaces without the knob interfering with the mounting plane.
• 3.25" Jaw Length: Provides an ideal balance of surface contact and compact design for professional Arca-type plates and rails.
• Versatile Mounting Interface: Center socket is countersunk on top for 1/4-20 or M6 screws and is natively threaded for 3/8-16 studs.
• Precision Dual Mounts: Includes two outside 1/4-20 tapped holes spaced exactly 45mm apart for specialized multi-point attachments.
• Safety Relief Grooves: 2.6mm deep relief grooves prevent gear "free fall" by catching safety stops on Arca-type plates if the clamp is partially open.
• Anti-Twist Integration: The rear side features a dedicated groove designed to match professional ball head connections, effectively preventing unwanted rotation.
• Field-Safe Hardware: The knob is fully captive, meaning it stops at maximum opening and cannot be lost or dropped in the field.

Professional Arca-Type Quick Release Solution

This 3.25-inch quick release clamp is built for the rigors of technical photography, from macro focus stacking to long-exposure landscape work. Precision CNC-machined from aircraft-grade 6061-T6 aluminum and finished with a durable hard-coat anodize, it delivers a tenacious, twist-free grip on compatible plates from major brands like RRS, Kirk, Wimberley, and Markins.

Advanced Torque and Reliability: The inclusion of a 5mm hex socket in the knob allows photographers to use a wrench for an extra-secure lock, providing peace of mind when supporting heavy telephoto lenses or complex modular rigs. Combined with integrated safety relief paths and an anti-twist rear channel, this clamp ensures your gear remains stable and protected in any orientation. Proudly made in the USA to professional-grade tolerances.

Technical Specifications

• Jaw Length: 3.25 Inches (82.55mm)
• Knob Type: Long Black with 5mm Hex Socket (Captive Design)
• Mounting Holes: Two 1/4-20 tapped holes (45mm spacing)
• Center Threading: Threaded 3/8-16 and countersunk for M6/1/4-20
• Relief Groove Depth: 2.6mm
• Material: CNC Machined 6061-T6 Aluminum
• Finish: Black Hard-Coat Anodized
• Origin: Made in the USA