Chuck Key

This key is just what I was looking for. It took forever to find info from and about the Jacobs company. Apex (Jacobs owners) does a terrific job of hiding from the public.

I got this to replace the key I lost for my Mac air drill - fits perfectly and I couldn't be happier!

Fit perfectly in my out of the ordinary chuck. Follow the number.

just a chuck key but was the right keys We needed

This chuck key was depicted as a "Thumb" handle design on the Amazon results web page, not a "T" handle design. I wanted the "Thumb" handle design that could exert more force and is gentler on the fingers and hands.