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Spiral Drill Bit with Centrotec Shank provides a precise, compact, and durable solution for drilling. Precision ground HSS steel stays sharp longer for precise hole drilling and a long service life. Centrotec shank can also be used with all standard three-jaw chucks for no-slip performance. The Festool Centrotec System is designed to deliver a better transfer of force between the drill and the bit, with no chance for bit slippage or marring of the drill bit. The Centrotec Chuck design enables a reduction in weight, and reduces the overall length, or clearance. The quick-change Centrotec system delivers a faster, more efficient means of changing bits and driver tips than any keyless chuck system, and virtually eliminates run out.