72 Piece Drill Drive Set with Masonry Drill Bits & HSS-G Metal Drill Bits The Dewalt DT70761 Set consists of 28 Drills, 42 Screwdriver Bits and 2 Holders. They are stored in a Connectable Tough Case compatible with the TSTAK System via the Large Tough Case. Features: Medium Tough Case System Set Connectable Case allows multiple sets to be stacked and locked together TSTAK compatible to hold all your accessory sets in one place Compatible with the TSTAK system via the Large Tough Case Extreme Masonry drill bits have a hardened steel body and core reinforcement for maximum strength combined with high drilling speeds in concrete and masonry Anti-slip shank - 3 milled clamping surfaces prevent rotation of the drill bit in the chuck Masonry drill bits are typically used for drilling anchor, plastic plug, fixing and pipework clearance holes Metal drill bits are made from high speed steel for wear resistance and longer life Metal drill bits are designed with a precision ground twist for fast drilling, long life and excellent concentricity Screwdriver bits have an Optimised Tip Geometry for full fitment in the fastener and reduced cam-out Full-fit head eliminates wobble and screw head rounding A small bulk storage case included Includes a drive guide with an extending sleeve for improved fastener stability and control Easy screwdriver bit removal and retention for user convenience Contains: 7 x Masonry Drill Bits: 1 x 4mm 1 x 5mm 2 x 6mm 1 x 7mm 2 x 8mm 21 x HSS-G Metal Drill Bits: 1 x 1mm 1 x 1.5mm 1 x 2mm 1 x 2.5mm 1 x 3mm 1 x 3.2mm 1 x 3.3mm 1 x 3.5mm 1 x 4.2mm 1 x 4.5mm 1 x 4.8mm 1 x 5.5mm 1 x 6.5mm 1 x 7.5mm 1 x 10mm 1 x 12mm 42 Screwdriver Bits: 1 x PH1 25mm 3 x PH2 25mm 1 x PH3 25mm 1 x PZ1 25mm 3 x PZ2 25mm 1 x PZ3 25mm 1 x T15 25mm 22 x T20 25mm 4 x T25 25mm 1 x T30 25mm 1 x T40 25mm 1 x PH2 50mm 1 x PZ2 50mm 1 x T20 50mm 1 x Magnetic Bit Holder 1 x Magnetic Drive Guide