Replacement Safety Ball Crank Handle.
Fits on most milling machines, including Bridgeport and Bridgeport-style mills.
Inside Bore = 5/8" and Keyway width = 3mm (Slightly less than 1/8").
Width of inner barrel= 1.1”
Usually used with power feeds so that the handle does not spin when not locked in place.
Includes a revolving knob. Handle spins freely in the out position. To engage, push in handle.
Overall Length 7 3/8"