These Draper HI-TORQ® metric double ring ratchet spanners are forged from chrome vanadium steel that is hardened, tempered, fully polished and mirror chrome plated for corrosion protection. Both ring ends have a 90-tooth ratchet mechanism, and the 4° movement enables 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. This six-piece set contains the full range. Features and Benefits • A 90-tooth ratchet mechanism on each end • The 4° movement enables use in tight spaces • Forged from chrome vanadium steel that is hardened, tempered, fully polished and mirror chrome plated • Optimal leverage through 12-point HI-TORQ® ring end • This set contains the full range Contents Sizes: 8 x 9, 10 x 11, 12 x 13, 14 x 15, 16 x 18, 17 x 19mm