Vintage Clamp On Bench Wheel Grinder Hand Crank Vintage Tools Vintage Sharpener. This manual hand crank grinding wheel is in perfect rusty condition! This is meant to clamp on the workbench to use for grinding and sharpening! I find these wheels great for sharpening tungsten! The wheel works smoothly and has two oil plugs to maintain that glide. There is a SW mark on the body near the clamp.