Based on this product's specifications, here are some alternatives and similar models
Drill Bits DeWalt HSS E Cobalt 11.5 mm BD-DT4946 set of 5
Summary description:
DeWalt HSS E Cobalt drill bits BD-DT4946 with 11.5 mm diameter, sold in a bulk pack of 5. Made from high-speed steel with cobalt alloy for improved heat resistance and wear life, these twist drills are suitable for drilling hard metals and general metalworking. They fit standard drill chucks and are intended for professional and workshop use.