Replacement foot for Black & Decker Workmate 301.
Tight fit to ensure it doesn't slip off - can be pushed on or a couple of hits with a rubber mallet will nicely seat it.
Printed in PLA with 20% infill and 0.2 layer height. Printed with a 0.6mm nozzle but would work just fine with any other sizes.
You could print in a softer / rubbery material if you have it or round the corners off if you like, but it works just fine as it is.
Spin it round in your slicer and lay it flat on the foot side so that it can print with zero supports (see picture).