Our stage button can be screwed down to your work surface. The button fits perfectly under our sharpening Stage. This will keep the stage from moving no matter how much force is applied by the sharpener. The button is machined from solid stainless steel and is supplied with a 1 inch stainless steel wood screw. The button is also threaded for attachment to a steel surface.The inner hole is also threaded with 1/4-20 threads for a machine screw if the user prefers. The inner hole is also threaded with 1/4-20 threads for a machine screw if the user prefers.