A time Saver- F50 quick release system allows you to switch very easily between multiple devices. Firm and Reliable - Made of CNC machined aluminum and stainless steel fasteners and pins. The vertical loading of the F50 quick release kit is up to 50kg The base is compatible with more than 90% Manfrotto 501 size quick release plate on the market Easy to attach on and off the clamp. FALCAM F50 Long Quick Release Kit