Fits the Remington model 700 721 and 722 & Bergara B14. Right hand mount fits right hand firearms and left hand mounts fit left hand firearmsPrecision machined from a solid block of top-grade billet 6061T6 aluminumCustom made to fit each type of firearm and align perfectly with your rifle?s receiverNo moving parts between the firearm and the scope67 percent lighter than comparable one-piece mounts with four times the threads and precision socket-head cap screws for absolute strength and securityAbsorbs shock and withstands temperature extremes better than steel mounts at a fraction of the weightMade in the USAShort action - Outside to outside of rings is 4.26" for standard ring mounts. Standard rings are .63? wide and have 2 ring screws per ring. Tactical rings are .80" wide and have 4 ring screws per ring. 4 Hole to hole spacing dimensions are .86", 3.63", .60". Height of mounts from top of receiver to centerline of scope tube is ? low .98", medium 1.11?, and high 1.23". Base screws are 6-48 X 1/4? long. Ring screws are 6-40 X 5/8" long. Both use a 7/64" Allen wrench.