Hex nut model Double Torx screws to hold your scope firmly in place Designed for Weaver Picatinny rail fitting Solid steel construction for superior strength 34mm 2 Piece Weaver Low Configuration: 2 Piece Ring Size (Diameter): 1.3 / 34mm Height: Low Rail: Weaver Fixings (Top Cap): Double Torx Screw Fixings (Rail): Hex Nut Internal Cushion: NO Retractable 'Recoil Stop' Pin: NO Height: 53mm / 2.1 Weight: 202g / 7.1oz 34mm 2 Piece Weaver Configuration: 2 Piece Ring Size (Diameter): 1.3 / 34mm Height: Medium Rail: Weaver Fixings (Top Cap): Double Torx Screw Fixings (Rail): Hex Nut Internal Cushion: NO Retractable 'Recoil Stop' Pin: NO Height: 58mm / 2.3 Weight: 216g / 7.6oz 34mm 2 Piece Weaver High Configuration: 2 Piece Ring Size (Diameter): 1.3 / 34mm Height: High Rail: Weaver Fixings (Top Cap): Double Torx Screw Fixings (Rail): Hex Nut Internal Cushion: NO Retractable 'Recoil Stop' Pin: NO Height: 64mm / 2.4 Weight: 242g / 8.5oz