If you have the older model Workmate 85 the rubber feet can crack and fall off. I wrote this to replace them. Should work in any filament. Apply black silicone sealant (or any thick glue) to inside to keep them on tight. I further suggest adhering felt or rubber chair pads to the bottom to keep the feet from sliding too easy or not enough. It will also help level the table as they get out of what over time.