12-Piece 1/4" hex sockets 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12 and 13 mm.One 1/4" ratchet, quick release, 60 teeth/6° action angle.One 1/4" sliding T-bar, 100 mm/4".One 1/4" extension bar, 75 mm/3".One 1/4" flexible extension bar, 150 mm/6".Two removable three-section plastic box with lid.Matte finish.High-performance alloy steel.Less wear and damage to fastener thanks to Dynamic-Drive™ profile sockets.Quick socket release button on ratchet.Case: High density polythene (HDPE).Standards: ISO 1174 and DIN 3120