One-piece ring and mount puts and end to misaligned scope rings and expensive scope damage. Places the scope in optimum alignment with the rings so they can't pinch or torque. Matches the factory hole spacing; ultra-strong design attaches in seconds with screws provided. Accepts 1" scopes with up to 40mm diameter objective lens. 4" long, available in black or silver, matte anodized finish, weighs 3 ounces.