BGS 191 Impact Extension Bar with Ball Bearing Handle 12.5 mm (1/2") 200

made of chrome molybdenum steel for both manual and impact wrenches can be fixed on impact wrench by pin and O-ring also an additional handle, for easy holding heavy machines with two hands only the interior extension bar spins the handle stays firmly in its place profile: external square drive profile size, metric: 12.5 mm length: 200 mm drive profile size, inch: 1/2", Weight: 0.9443060068246 Pounds, Manufacturer: BGS technic