The Dewalt DT70758 is a 57 Piece Drill Drive Set in a Modular, stackable medium tough case. Designed for secure storage of accessories. Clear lid for easy bit identification. Use the locking system to connect the cases together, and securely stack with small, medium, and large Toughcases. Features: CLEAR LID: For quick and easy bit selection INNER DOVETAIL SYSTEM: Bit bars and accessories can be moved around and customized to your preference QUICK & EASY BIT REMOVAL/RETENTION: For user convenience. Bits lock into place to prevent them falling out when not in use FLATWOOD BITS HAVE A BEVELLED PILOT POINT TIP: Bevelled outer cutting edges enable precise positioning of the drill and a clean hole FLATWOOD BITS HAVE A THICK, ROBUST STEEL SHANK: For added durability. 1/4" shank ensures easy, slip-proof clamping FLATWOOD BITS PRODVIDE FAST, ACCURATE DRILLING: For quick task completion BRAD POINT WOOD DRILL BITS: Have a centering point, two shoulders and peripheral cutting edges for fast, cle