21mm Weaver Mount Base, Full Metal, 25.4mm One InchDiameter

• Tube Diameter: 25.4mm (one inch)
• For 21mm picatinny rail or weaver rail
• For 25.4mm one inch rifle scope, flashlight or laser sight etc
• High-durability aluminum alloy in black matte
• Designed for firearms
• SCOT-52-B 25.4mmLowProfile Weaver Mount Ring
• Height (from bottom to ring center): 22mm (0.9 inch)
• Ring width: 21mm (0.8 inch)
• Weight (net): 57g (2.0 ounce)
• SCOT-52-C 25.4mm Medium ProfileWeaver Mount Ring
• Height (from bottom to ring center): 26mm (1.0 inch)
• Ring width: 21mm (0.8 inch)
• Weight (net): 61g (2.1 ounce)
• SCOT-52-D 25.4mmHigh Profile Weaver Mount Ring
• Height (from bottom to ring center): 30mm (1.2 inch)
• Ring width: 21mm (0.8 inch)
• Weight (net): 66g (2.3 ounce)