Gray Ops CNC Throw Lever Arca Clamp for Bipods attaches to Harris, Cyke-Pod, and Atlas style Bipods. Allows you to quickly and reliably attach/detach your bipod via adjustable tension throw lever.FeaturesEasy/ergonomic gripping of lever for attach/detachThrow lever design allows for adjustable tension settings from hard close, to soft close, and a few settings in between. 11 total lockable positions per full "Nut" rotation which adjusts the tension .002 per positionQD Throw lever and all internal stress parts machined from Steel and are Black NitrideMain housing machined from 6061 Aluminum and hard coat black anodizedHarris bipod version includes QD Arca clamp and Harris adapterAtlas version includes QD Arca clamp Cyke-Pod Version includes QD Arca Clamp and Cyke-pod adapter