The DEWALT 25 Piece Drill and Drive Set drilling and Impact Driving Set contains a variety of hex shank metal drill bits and screwdriver bits suitable for rotary hammer or cordless drills. The modular stackable small tough case has been designed for secure storage of accessories. The clear lid offers easy identification and easy bit removal and replacement. Use the locking system to connect the cases together and securely stack on top of the medium Toughcase. Compatible with the accessory caddy for TSTAK compatible connection.