DNZ Products (Dednutz) Game Reaper Howa 1" Short Action High Rings (Silver) - Mounts fits right hand firearms. - 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. - Short action – Outside to outside of rings is 4.17?. 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?, 3.88?, .60?. Height of mounts from top of receiver to centerline of scope tube is – low .98?, medium 1.11?, and high 1.23?. - Precision machined from a solid block of top-grade billet aluminum - Custom made to fit each type of firearm and align perfectly with your rifle’s receiver - No moving parts between the firearm and the scope - 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 - Made in the USA