The Pro-Series 23 Piece Quick Change Drive And Drill Bit Set includes 21 popular size bits and drivers for drilling and driving into wood, metal and plastic. Assemble flat packed furniture, hang photos, or install shelving for storage. Use with a cordless drill for DIY, home improvement and general maintenance projects around the house. You will find no end of uses for this Drive And Drill Bit Set. The quick change adapter makes it easy to switch accessories without re-chucking. The hex shank locking system prevents bit slippage. The drill bits are constructed of titanium for long life and high usage. Packaged inside a storage case to keep the bits organized and easy to find.