fast-changechuck

noun
UK /fɑːst ˈtʃeɪndʒ tʃʌk/
US /fæst ˈtʃeɪndʒ tʃʌk/

A tool part that lets you swap drill bits quickly without a key.

He fitted a fast-changechuck to his drill so he could switch bits in seconds.


OTHER MEANINGS

2. A socket adapter that lets a mechanic change sockets rapidly.

The mechanic used a fast-changechuck on the impact wrench to swap sockets fast.

3. Any coupling device designed for rapid tool changes on a machine.

The lathe's fast-changechuck cut setup time between jobs.

4. A quick-swap holder for screwdriver bits in a multi-bit driver.

This screwdriver has a fast-changechuck that holds six bits inside the handle.