These Draper HI-TORQ metric ratchet combination spanners are forged from chrome vanadium steel that is hardened, tempered, fully polished and mirror chrome plated for corrosion protection. The open end is offset at 15. The ring end has a 90-tooth ratchet mechanism allowing 4 movement, enabling use in tight spaces. The 12-point HI-TORQ delivers maximum leverage by transferring torque to the flats and preventing slipping or damage to the fastener.