Festool 492526 Centrotec Hook Driver / Adapter allows you to quickly and easily drive hooks with your cordless drill. The Centrotec shank is designed for use with the Festool Centrotec System, as well as with all standard or keyless chucks for no-slip performance. This innovative system provides a seamless transfer of force, eliminating bit slippage or marring of the drill bit. By using the Centrotec System, the weight of the drill is reduced by nearly half a pound, and its length is shortened by nearly 1-1/2 inches. Most importantly, it a quicker and more secure means of bit change than any other quick-change chuck system. The large opening enables quick alignment, while the durable, solid steel construction ensures a long service life. The long, precision milled hex shank eliminates wobble or run out during use, making this adapter both efficient and reliable. Model Number: 492526