FeaturesSuperior performance - blades are easily replaced to provide a new bit on demandFaster drilling - aggressive feed screw design allows the bit to pull through wood fasterLonger bit life - replaceable blades are made of hardened steelEasy size reference - bit and blades are engraved for quick and easy size identificationReplaceable blade system provides excellent productivity by eliminating downtime and the costs of re-sharpening3/8 in min chuck sizeHexagonal shank offers strong grasp in drill chuckSize and model number engraved on each bit