This keyed chuck has a 1/4 inch capacity with a 3/8 inch - 24 thread. Use with chuck key 48-66-3200 and key holder 48-66-4080. It can be used on reversing drills of matching capacities and threaded spindles.

• 1/4 in. capacity, keyed chuck.
• 3/8 in. - 24 thread.
• Chuck key included.