The dewalt dt9282 mini mac wood drilling kit the drill bits are all made from chrome vanadium steel providing strength and durability they have central location points and are designed for accurate and clean cutting the flatwood drill bits each have a ground chip breaker to minimise splintering and to improve the cutting efficiency all tools are supplied in a hard plastic modular storage case the set contains 7 x brad point drill bits 3 4 5 6 8 10 12mm 6 x extreme flatwood drill bits 12 14 16 20