The 42-piece tip is CNC milled for excellent grip, minimizing the chance of falling and reducing swinging. The reinforced plastic storage box is equipped with a sturdy lock to ensure safe storage, orderliness, and easy access of drill bits . The Bit Tech plug-in drill bit is made of high-quality alloy with a unique precision design that reduces peeling and extends its service life. Advanced torsion bending technology can withstand high torque stress and prevent drill bit fracture. The chassis adopts a tilted storage organization design for easy access to bits; Including various crosses, slits, stars, squares, and hexagons