3/8", 6-point, for manual operation, 17-piece in Safety-Insert-System, 2-component soft foam insert (insert also suitable for HAZET-Assistent). Consisting of: 1x each 6-point socket wrench insert: SW10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 21 - 22 mm Reversible ratchet, universal joint, 3x extension (74 mm, 150 mm, 254 mm) Drive type / profile External hexagon Drive 3/8 " Item type Application Manual operation Main colour silver Wrench size 10 mm , 11 mm , 12 mm , 13 mm , 14 mm , 15 mm , 16 mm , 17 mm , 18 mm , 19 mm , 21 mm , 22 mm Assortment 17 pieces