The handles of those cheap quick clamps / vices tend to break easily. This replacement part is slightly larger so it should be able to handle a higher load and if you break it you can just print a new one. Drawing with dimensions included so you can verify if you clamp handle is the same size. If your handle has different dimensions, there is a solidworks file included that can easily be edited. Just slice it with your favorite slicer with a 100% infill. I printed it in PLA and it works great.