The DeWalt 85 Piece Toughcase Drill and Screwdriver Bit Set comes with a large Tough Case which can be stacked with other TSTAK cases. The tapered central core increases stability and durability, reducing breakage. These also contain a Wear Mark Indicator allowing you to make sure the holes you drill are the diameter you need. Ideal for accurate mechanical anchor installation. Features & Benefits • Connectable Case allows multiple sets to be stacked and locked together • Extreme SDS Plus masonry drill bits are designed with a Toughcore • Adds strength and resistance when drilling deep holes with increased side loads • Reduces flexing between the flute and shank, preventing bit fracturing • Extreme SDS Plus masonry drill bits contain a Wear Mark Indicator • Extreme SDS Plus masonry drill bits are designed with a 2-Stage Helix which improves drilling performance • Masonry drill bits are typically used for drilling anchor, plastic plug, fixing and pipework clearance holes • Black & Gold m