drilling bit

Synonyms:

drill bit

Types:

core bit

a hollow drilling bit that is the cutting part of a core drill; allows core samples to be taken

blade bit, fishtail bit

a drilling bit with cutting edges usually hardened against wear

rock bit, roller bit

a drill bit that has hardened rotating rollers

Type of:

bit

the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press