Festool 491794 Drill Bit 5.0mmReplacement 5mm bit for Centrotec drill bit with depth stop (492522). Save money by only having to replace the bit and not the entire assembly 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 serve as an extension of the motor,