Chrome Molybdenum steel impact socket bits. Phosphate finish for added corrosion resistance. Suitable for use with any impact tool. Supplied in storage case.24pc 1/2Sq Drive Hex/TRX-Star*/Spline Impact Socket Bit Set• Chrome Molybdenum steel impact socket bits.• Phosphate finish for added corrosion resistance.• Suitable for use with any impact tool.• Contents: Hex; 5 6 7 8 10 12 14 17mm TRX-Star*; T30 T40 T45 T50 T55 T60 T70 T80 Spline; M5 M6 M8 M10 M12 M14 M16 M18.• Length: 78mm.• Supplied in storage case.• Lifetime guarantee*.• Model No. AK56000Model No: AK56000:Brand: Premier:Contents: Hex; 5PTDSEAAK56000