This Steel Dragon Tools® Heavy Duty B16 Chuck & Arbor Adapter fits any drill bit from 1/8"-5/8" (3mm-16mm) and can be used on any machine with a 3/4" Direct Holder.
- Chuck Capacity: 1/8"-5/8" (3mm-16mm)
- Shank: B16 3/4" Weldon Shank
- Chuck Key included