Reversible Ratcheting Wrench Set 8-19 mm. Ideal for use in hard-to-reach areas. Product Features Ratcheting box end feature 72-tooth mechanism made of forged steel Chrome-Vanadium Steel with polish chrome finish Elliptical shape Surface Drive on box end provides off-corner loading for better grip and reduced fastener rounding Supplied in a plastic case Technical Data Material: Chrome-Vanadium Steel Pieces: 12 Sizes [mm]: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19