Your favorite optic deserves the rock-solid placement provided with a set of WheelerA(R) 30mm Picatinny Rail Rings. Sturdy 6061 aluminum construction with a 6-hold ring design that allows for increased clamping force. Staying level is easier, too, with a flip-out anti-cant indicator you can position on the forward or rear ring. 6061 aluminum construction has an anodized matte black finish 6-hole ring with flat-top design increases clamping force Integrated anti-cant swing-out level can be placed at front or rear ring Retained 1/2" lock nuts secure to Picatinny rails Order today!