MIXPOWER 13 Piece Hex Bit Socket Set, S2 Steel Tool Kit, 2-14MM, Chrome Product Details 【S2 Material】Bits made of premium S2 alloy steel for superior hardness and insure longevity,Cr-V steel sockets provide superior torque for greater turning power. 【Set Include】13-Piece Metric hex bit socket set includes: 1/4” Drive: 2mm, 2.5mm, 3mm, 4mm, 5mm, 5.5mm, 6mm; 3/8” Drive: 7mm, 8mm, 9mm, 10mm, 12mm; 1/2” Drive: 14mm 【High-torque】Sockets features a chrome finish and bits are made from S2 steel bits to resist rust and corrosion. 【Storage case】 It comes with a durable blow-molded carrying case for easy transportation, safe storage, and quick organization.