Description
A keyless chuck for electric drills with a drill bit size of 2mm to 13mm.
It screws onto a gearbox with a 1/2" 20UNF (12.7mm) thread and 20 threads per inch, which corresponds to a thread pitch of 1.27mm.

Description
A keyless chuck for electric drills with a drill bit size of 2mm to 13mm.
It screws onto a gearbox with a 1/2" 20UNF (12.7mm) thread and 20 threads per inch, which corresponds to a thread pitch of 1.27mm.
