Klutch® cobalt-coated drill bits are engineered to outlast standard bits. Includes an extensive range of drill bit sizes for a variety of applications, including letters A–Z, numbers 1–60 (plus 30 replacement bits for 41–60) and 29 fractional sizes from 1/16in. to 1/2in. Precision-milled 118° point. Metal drill index and storage box.