Feature A 100% avoid CANT A 25.4mm 1" Diameter A On-side Air Bubble Level A Easy to Use A Designed for Real Firearms A Full Metal A Light & Compact Picture Specification A Diameter:25.4mm(1 inch) A Length:44mm (1.7 inch) A Width:9mm (0.3 inch) A Weigth:12g (0.5 ounce) A Finish:Black matte A Anti Cant Device mount designed for real fire arms A Air bubble floating to indicate level situation A High quality 6063 T6 aircraft grade aluminum alloy A Including items: hex key