High quality slim style chrome vanadium steel wrench hardened tempered and mirror finished for corrosion resistance 72 tooth chrome molybdenum walldrive ratchet ring combines ultra smooth operation and durability with simple and effective reverse action meets and exceeds iso1711 din899 and bs3555 torque standards by our reckoning the strongest range of ratchet wrenches on the market 15 offset keeps knuckles clear of obstructions ideal for use where space is at a premium length 175m