Description:Made of aluminum alloy material, surface anode anti-oxidation treatment,durable enough.Can conveniently adjust the width of clamp from 38mm.With a lever so that can be tighted for ball head, tripod or monopod.Knob-type design for strong universality.Safety stop relief grooves for protecting your camera from accident drops.Specification:Product name: Quick Release ClampColor: BlackMaterial: Aluminium alloySize: About 50x50mmMount size: About 38mmCompatible: For Arca Swiss standard all quick release plates, ball heads and tripodsPackage included:1PC x Quick Release ClampNote:Transition: 1cm=10mm=0.39inch1. Due to the light and screen difference, the item& 039;s color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement.