Features: -Made of high-quality metal with an excellent hardness of HRC 62-64 (Rockwell hardness), it has excellent cutting performance, wear resistance and durability. -The drilling dimensions are extremely precise, with specifications of #5, #6, #8, #10, #12. -Equipped with a 1/4in hexagonal drill shank, it can be used with impact drills and other power tools to meet your various daily needs. -It can be used on various materials such as wood, plastic, polyvinyl chloride (PVC), fiberboard, particleboard, plywood, and rubber. -It integrates the functions of drilling and countersinking. This set comes with 5 replacement drill bits. .
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