Quick release lever Double Torx screws to hold your scope firmly in place Designed for Weaver/Picatinny rail fitting Solid steel construction for superior strength 30mm 2 Piece Weaver Low QR Configuration: 2 Piece Ring Size (Diameter): 1.2 / 30mm Height: Low Rail: Weaver Fixings (Top Cap): Double Torx Screw Fixings (Rail): Lever Internal Cushion: NO Retractable 'Recoil Stop' Pin: NO Height: 42mm / 1.7 Weight: 160g / 5.6oz 30mm 2 Piece Weaver Medium QR Lever Configuration: 2 Piece Ring Size (Diameter): 1.2 / 30mm Height: Medium Rail: Weaver Fixings (Top Cap): Double Torx Screw Fixings (Rail): Lever Internal Cushion: NO Retractable 'Recoil Stop' Pin: NO Height: 44mm / 1.7 Weight: 175g / 6.2oz 30mm 2 Piece Weaver High QR Lever Configuration: 2 Piece Ring Size (Diameter): 1.2 / 30mm Height: High Rail: Weaver Fixings (Top Cap): Double Torx Screw Fixings (Rail): Lever Internal Cushion: NO Retractable 'Recoil Stop' Pin: NO Height: 50mm / 2 Weight: 196g / 6.9oz