Drillbit

7 clues
Borer
Chuck insert
Chuck's holding
It can be boring
Hole maker's insert
Tool part used to create holes
Routine with a goofy boot camp instructor?
Similar answers:
Adrillsergeants
Bagelbites
Baseswitchesdrills
Closeorderdrill
Cordlessdrill
Dentaldrill
Dentistsdrill
Dowelbit
Drilet
Drill
Drillbase
Drillbigot
Drillbit
Drillbits
Drillbrokerplay
Drillchuck
Drillcorps
Drilldown
Drilled
Drilledtobits