The Replacement Caster Wheel for Ultra-Fab Manual 2" Trailer Jack # UF49-954035 is a replacement for the Ultra-Fab Jacks 49-954030 and 49-954032 which have a maximum tongue weight of 1,000-lbs. Meaning the caster # UF49-954035 also has the same maximum tongue weight.
This caster has an inner diameter of 1-3/4", and depending on the I.D of your current jack tube, this may be a suitable option.
If you need a larger I.D, the Removable Wheel for Dutton-Lainson A-Frame Trailer Jack Model... view full answer...