F51 Back-to-Back Double Arca‑Type Quick Release Clamp

The Hejnar Photo F51 is a specialized back-to-back double clamp designed to connect two Arca-type rails or plates. This precision-machined coupler allows for versatile rigging, aligning identical rails perfectly with the clamp center on each side. CNC-milled from 6061-T6 aluminum for maximum durability.

Quick Overview

• Model: F51
• Double-sided Arca‑type back-to-back design
• Aligns identical rails to the clamp center on both sides
• Compatible with rails of varying widths and manufacturers
• Dual captive knobs (cannot be lost in the field)
• Deep safety relief grooves prevent gear "free fall"
• Compatible with Kirk, R.R.S., Arca-Swiss, and most Arca-style plates
• Made in the USA

Product Description

The F51 Back-to-Back Clamp is an essential component for photographers building complex macro rigs, panorama brackets, or multi-axis camera setups. By mounting two Arca-type clamps back-to-back, it provides a secure 90-degree connection between any two Arca-compatible rails or plates.

Engineering for versatility, the F51 works seamlessly with rails of different dimensions and from various manufacturers. If you use identical rails, the design ensures they align perfectly with the clamp center on each side for balanced and symmetrical setups.

Safety is built-in with deep relief grooves. When paired with plates featuring safety stops, these grooves prevent your gear from sliding out if the clamp is not fully tightened. Both knobs are fully captive, stopping at their maximum opening to ensure they are never lost in the field. Precision CNC-machined from 6061-T6 aluminum and hard-coat anodized, the F51 is built for professional-grade reliability.