CENTERLINE HEIGHTS 1 inch: 30mm: 34mm: Low: 0.8 in Low: 0.8 in Low: 1.10 in Medium: 1.00 inch Medium: 1.00 inch Medium: 1.26 inch High 1.26 in High 1.26 in High 1.45 in Includes: Deadlock Scope Rings, Hardware Materials: 6061 Aircraft Grade Aluminum Compatibility: Rifles with Picatinny rails Weight: 5.8 oz Diameter: 30 mm Scope tubes Color: Black Warranty: Lifetime Torque Specs: Mount Base: 20 in-lbs | Scope Rings: 18 in-lbs With a rigid beefed-up design with strategically placed lightening cuts to reduce weight - the Monstrum Deadlock Series provides rock-solid mounting of your rifle scope at the absolute minimum amount of weight possible. Mounts to any Picatinny or Weaver mounting platform with custom locking bolts that slot seamlessly into your rail - guaranteed to hold zero against the toughest of recoil