1/4" + 1/2", for all important car screws, 27-piece. Consisting of: With special spark plug sockets (16 and 21 mm), socket wrenches from 6 - 32 mm and standard ratchets in 1/4'' and 1/2'' (for other contents, please refer to the illustration). Ratchets forged from one piece (CrV steel), hardened and with 52 teeth and quick-release mechanism (releasing the inserts by pressing a button). Steel box with torsion-resistant, indestructible molded insert made of injected polypropylene. Oil-resistant, acid-resistant and easy to clean, with permanently legible marking for all wrench sizes. Drive 1/2", 1/4" Type Article Main color silver Wrench size 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 21 mm, 22 mm, 24 mm, 27 mm, 30 mm, 32 mm Assortment 27 pieces Teeth 52 Z.