The Freeman P55BBK 55-Piece Impact Driver Bits and Oscillating Blades Kit with Case is ideal for replacing impact driver bits and sharp cutting blades for oscillating tools. The hex bits are universally compatible with all brands of impact drivers, and are built to last up to 10 times longer than standard screwdriver bits. The cutting blades are heat-treated for strength and durability, and outperform overpriced comparative replacement saw blades to cleanly and precisely cut materials such as wood, metal, drywall, plastic, fiberglass, and PVC. These metal blades are compatible with most oscillating multi-function tools. The 55-Piece Impact Driver Bits and Oscillating Blades Kit includes 40 impact-ready hex bits, 15 cutting blades and a zippered EVA case, and will increase the productivity of DIYers tackling home improvement and repair projects as well as professional construction contractors at the jobsite.