Feature A 1" (25.45mm) Low / 1.25" (32mm) Medium / 1.5" (38mm) High Profile Rings Provide Optimal Height for Comfortable Shooting A CNC-Machined Construction Ensures Precise Scope Alignment for Reliable Performance A 6061-T6 Aluminum Alloy Build Offers Lightweight Durability without Compromising Strength A Six-Screw Per Ring Picatinny Mount Keeps Scope Secure for a Stable, Consistent Hold Specification Specification Details Ring Dia: 30 mm / 1.18 in Height: 47.0 mm / 1.85 in & 55 mm / 2.17 in & 61 mm / 2.4 in Center Height: 25.4 mm / 1 in & 32 mm / 1.25 in & 38 mm / 1.5 in (Bottom to Center) Material: 6061-T6 Aluminum Alloy Weight: 58 g / 2.04 oz & 155 g / 5.47 oz & 82 g / 2.89 oz Torque: 30-43 in / lbs (3.5-4.9 NA m) & 18-22 in / lbs (2.0-2.5 NA m) Mount: Picatinny Finish: Black Matte Items in the Package: T15 Torx Wrench Size