Use Jobber Maintenance - Heavy Duty Drill Set for the Pro and General Application drilling. Manufactured from quality High Speed Steel in Seneca, SC, USA. Our 135 degree split point starts cutting immediately, preventing walking of the drill. Black and Gold application for superior performance.. Bit Material: High Speed Steel. Drill Bit Type: Twist. Drill Bit Type(s) Included: Assorted Twist Bit Set,Twist. Features: No Additional Features. Individual/Set: Set. Material Application: Aluminum,Duct/Sheet Metal,PVC,Steel,Wood. Number of Pieces: 18. Number of Pieces: 11-20 Pieces. Returnable: 90-Day. Shank Style: 3-Flat. Tools Product Type: Cordless Power Tool. Number of Pieces: 18. Number of Pieces: 11-20 Pieces. Bit Material: High Speed Steel. Material Application: Steel. Material Application: Wood. Material Application: Aluminum. Individual/Set: Set. Material Application: Duct/Sheet Metal