Festool 492135 Centrotec Chuck Save time changing between drill and screw bits with the quick-change Centrotec System Reduce fatigue with the lightweight Centrotec chuck and decrease drilling/driving clearance with the compact design Centrotec bits extend directly into the drill spindle so they serves as an extension of the motor, significantly improving controllability and torque Getting the job done right the first time eliminates waste of material and fasteners and saves valuable time. Switch between drill and driving functions in seconds with FastFix, saving time and eliminating the cost of dedicated, single purpose tools