Features and Benefits: * 4 piece set includes 6mm, 8mm, 10mm, and 12mm * Also available individually * Skin-packed This is a handy set of 12 point bits. Triple Square bits fit 6mm, 8mm,10mm and 12mm sizes, all on 1/2" hex drives. Fits some head bolts, retaining bolts, disc brake calipers and other applications. Easy to use!