Leofoto Arca & Picatinny Lever-Release Hybrid Clamps Black. These redesigned clamps feature a lever release for quick and easy attach/detach and have a width adjustment screw for non-standard arca and picatinny rails. They come in both a round and square shape to match the head. Specifications for Leofoto LSC-52 Arca & Picatinny Lever-Release Hybrid Clamps: Manufacturer: Leofoto Color: Black Quantity: 1 Features of Leofoto LSC-52 Lever-Release Hybrid Clamps - Arca & Picatinny Compatible Aluminum CNC Machining Package Contents: Leofoto LSC-52 Lever-Release Hybrid Clamps - Arca & Picatinny Compatible Leofoto LSC-52: LSC-52 Arca & Picatinny Lever-Release Hybrid Clamps Black