Fits JD 50/60/90 drills, as well as Case’s SDX. Narrow, sleek wheel that’s proven to shed mud better than OEM & other aftermarket firming wheels. No other seed-lock wheel stays as clean as the DuraLok™ — these keep you running in muddy conditions when nothing else will. The DuraLok is similar to the SDX firming wheel, but at less than half the price, and with an easily replaceable bearing. Uses OEM spacers & bolt. Now with chamfered hub to let dirt fall away more easily, for better bearing life. And UV-resistant material to hold a bright yellow color for years.