Through the thumb knob and the cam lock, it provides quick detach & deployment capability and adjustable Tension. Description du produit Rail Type: Fits 20mm Picatinny/Weaver style Rail Length: 2., 36 inch Height: 0., 83inch Material: Aluminum 6061-T6 Color/Finish: Black/Matte Avertissement De Sûreté Risque detouffement – Contient de petites pieces. T6 6061 Aluminum construction results in durability and lighter weight, with being Mil-Spec hard coat anodized matte black finish. Mount Quick Detach Levier Riser Lever Quick Detach Support Picatinny Relevable à Levier TRIROCK - Compatible Rails 20mm - Hauteur 0.83" - Noir Mat Adapter Lunette Rail Weaver 20mm 5 Slots This Trirock designed Picatinny riser lever mount adapter provides an additional height, that the extra height is ideal for gaining the extra clearance to clear iron sights from your scopes field of view and also provides a more ergonomic location for mounting your scope This Trirock designed Picatinny riser lever mount adapter provides an additional height, that the extra height is ideal for gaining the extra clearance to clear iron sights from your scopes field of view and also provides a more ergonomic location for mounting your scope. This Trirock designed Picatinny riser lever mount adapter...Through the thumb knob and the cam lock, it provides quick... It does fit most any 20mm weaver/Picatinny style scope mount or rail system as commonly found, and the top rail will accept most any scope/red dot/reflex sight and other accessories that have a Weaver/Picatinny compatible base.