Features: The Haoge CP-39 Quick Release Clamp is an Arca-type compatible clamp with three strap holes for quickly attaching / removing your camera's neck strap or sling. Bottom with AS standard dovetail. There is a 3/8" threaded hole to mount the clamp onto a tripod/monopod, and also comes with a 3/8" to 1/4" screw adapter. Compatible with AS standard quick release plate such as: RRS, ARCA--SWISS / KIRK / Wimber ley / MARKINS / SUNWAYFOTO / Kangrinpoche / BENRO / SIRUI etc. Compatible with ballhead, tripod or monopod of Gitzo, Manfrotto, RRS, Arca-Swiss and other equipments with 3/8" or 1/4" screw. Specifications: Material: Aluminum alloy Color: Black Length: 87mm Width: 39mm Thickness: 15.5mm Item weight: 70g Package included: 1 x Haoge CP-39 Quick Release Clamp 1 x 3/8" to 1/4" Screw Adapter ( Quick Release Plate, Camera and Strap are not included)