High quality slim style Chrome Vanadium steel spanner. 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 ISO 1711, DIN 899 and BS 3555 torque standards - by our reckoning, the strongest range of ratchet spanners on the market. 15º Offset keeps knuckles clear of obstructions. Ideal for use where space is limited.