"A set of seven high-speed drill bits ideal for drilling into wood, plastics and soft metals. Features: Made from high grade steel.Includes:1/32 inch drill bit (use #483 collet) 3/64 inch drill bit (use #483 collet) 1/16 inch drill bit (use #482 collet) 5/64 inch drill bit (use #481 collet) 3/32 inch drill bit (use #481 collet) 7/64 inch drill bit (use #480 collet) "