DNZ 24210 Savage Flat Back Receiver Long Action Scope Tube, 1" 67% lighter than comparable one-piece mounts with four times the threads and precision socket-head cap screws for absolute strength and security Absorbs shock and withstands temperature extremes better than steel mounts at a fraction of the weight Precision machined from a solid block of top-grade billet aluminum No moving parts between the firearm and the scope