Designed to fit Howa 1500 and Howa Mini rifles; American made, lightweight alloy scope mounts; Fully CNC machined; High-grade lightweight aircraft aluminum; Integrated scope ring and base design; Lapping not required; Does not fit Howa Superlite; Front hole spacing: .860 inches (21.84mm); Rear hole spacing: .600 inches (15.24mm); Sold in pairs; Includes mounting screws and wrench, (6-48 screws / T-15)