Double-disk ground for uniformity, provides improved accuracy by spreading recoil force over a larger area. Tapered shank won’t bind within bedding. Remington is drilled for lug retaining pin (included). Factory barrels will need to have the recoil shoulder set forward. Mfg: Hollands Gunsmithing SPECS: 17-4 Stainless steel. Rc 42-44, double disk ground. .250" (6.36mm) thick. Rem – fits Remington 700 and Savage 110, 1.79" (4.5cm) long. Gunsmith installation required.