• ISO 6789, ASME B107.14 • Accuracy: +/- 3% • Visual and audible indication • Dual way direction (C.W./C.C.W.) click type • Quick release button . • Adjusting ring locking system • Aluminium alloy handle with anodic treatment • Si-Cr-Mo spring . • Cr-Mo pawl • Cr-Mo square driver • 48 Gear teeth