Extra-wide offset base mounts flashlights and lasers to any railed handguard for easy light/laser activation using your thumb without your hand ever leaving the handguard or vertical grip. Ambidextrous design can be installed at the 3- or 9- o'clock positions to accommodate right- or left-handed shooters. Two steel Allen head screws pull the clamp tight to the rail so it won't shoot loose. Made from lightweight PVC alloy thermoplastic that's resistant to most solvents. Adjustable to fit flashlights and lasers from .800" to 1" diameter. Mfg: Viking Tactics SPECS: PVC alloy themoplastic Black Coyote Tan or Flat Dark Earth. 1½" (3.8cm) long 2½" (6.3cm) wide 1¼" (3.2cm) high. 1.8 oz. (51g) weight. Fits .800" (20mm) to 1" (2.5cm) diameter flashlight and laser.