About this Product
Stylish thumbwheel for driving telescope worm gears and similar applications.
D shaped peg hole is 6mm diameter with flat spot at 4.5mm, and is a very tight fit.
Use some light grease on the worm gear shaft before seating the thumb knob, to help it slide on more easily
Replaces chincy Celestron knobs on hand operated ALT/AZ & GEM telescope mounts.
2.064 w x 1.969 d x 2.062 h
5.242 w x 5 d x 5.238 h