Bosch quality is clearly visible with this drill. The drill is installed in a kind of mandrel with a hexagonal head. This guarantees a very secure hold of the bit by the drill chuck, minimizing wobbling and wobbling. The package specified what speed to use for some materials, as well as the maximum RPM to save on the drill. The drill was very sharp and retained its sharpness even after six weeks of light use. I have had good experiences with other titanium drill bits and have every reason to expect a long service life from this drill bit. Overall a great exercise. Bosch TI2140 13/64" SP Jobber Titanium Drill Bit