Up for auction is a
set of two used swivel caster wheels. The overhaul height is 6 ½ inches. The
wheels are aluminum. I used them on an engine stand and at that time the wheels
were coated with some kind of plastic tread, which I removed. The part number
for Colson is 4SER.5. The diameter of the wheel is 4 1/8. The platform holes
are 4 1/2 X 4 1/8 center of hole to center of hole. There are two grease
fitting on each one which can be seen in the picture.