Festool Ce Self-centering Bit 5mm - 5mm Centrotec self-centering drill bit. The Centrotec shank can be used with all three-jaw chucks for no-slip performance or in conjunction with Festool's Centrotec chuck system. With the Centrotec design there is a better transfer of force with no chance for bit slippage or marring of the drill bit. Reduce the weight of the drill by nearly ½ pound and the length by nearly 1-1/2?ö with the Centrotec system. Additionally the Centrotec system offers a quicker way of changing bits than a keyless chuck with less run out.5mm high quality self-centering percision drill bit for excating work.Centering mechanism is in free rotation so it does not burn or mar your surface.Has Brad Point tip for ease of use and control.Long precision milled hex shank for secure clamping and no wobble while in use.Fits either Festool Centrotec chuck or standard chuck.