Precision Rifle Recoil plates are designed to fit the Ruger Precision Rifle (RPR) and RPR MAGNUM. The Recoil Plate is made from 6061 aluminum with built in cant adjustment. The +1 plate places the pad higher than the original. The bolt pattern is specific to the Limbsaver Trap/Skeet -Small - recoil pad #10534 - which needs to be purchased separately. This pad was intentionally selected for its relatively thin side walls thus eliminating the need for grinding. Locating the much softer and wider recoil pad places the center of the pad higher on the shoulder. Included are two bolts that will be inserted into the recoil pad for mounting. Note - The stock recoil pad will not mount to this recoil plate without modification. The recoil plate fits RPR's and RPR Magnum's only. Installation instructions are include with purchase Tools needed are: 9/64 Allen wrench (.140) 5/32 Allen wrench (.156) 1/8 Allen wrench (.125)