Made of quality tool steel, this 36-piece insert bit set is colour-coded for quick identification and packaged in a metal case with a magnetic holder and a forward quick release. The 1/4-inch hex design works with most bit holders. This set includes 1/8, 3/16, 7/32, and 9/64 inch hex bits: 2, 3, 4, 5, and 6 millimetre hex bits: Phillips # 1 (3), 2 (5), and 3 (2): slotted # 4, 5, 6, 8, and 10: and square recess # 0 (1), 1 (2), 2 (5), and 3 (2).