ITEM NAME:Clamp Quick Release Plate For Arca SWISS RRS BENRO Tripod Monopod 50*5 PJW Descriptio n Specification: Material: aluminum alloy Colour: Black Size: 50*50*15mm Thread: 1/4'', 3/8'' Description: All-metal materials, CNC precision machining, surface oxidationtreatment It has a 3/8"-16 threaded hole to directly mount the clamp onto a tripod/monopod, and also comes with a 1/4"-20 bushing adapter. Fast loading base with antiskid lock function. Add 1/4'' conversion thread to be directly connected to the ordinary camera. Built-in spirit level and precision ruler. It will accommodate any Arca style plate such as, RRS, ARCA--SWISS /KIRK/Wimberley/ MARKINS/ SUNWAYFOTO/ kangrinpoche/ BENRO/ SIRUI etc. Product list: QR-50 quick release board*1 We offer you what you need! Clamp for Q50 Quick Release Plate.It will accommodate any Arca style plate such as, RRS, ARCA--SWISS /KIRK/Wimberley/ MARKINS/ SUNWAYFOTO/ kangrinpoche/ BENRO/ SIRUI etc. Clamp for Q50 Quick Release Plate. Fast loading base with antiskid lock function.