Our saxophone body straightening tool was designed at the body work station in our shop. We designed the plugs for this tool to have a gentle taper which will contact the receiver on the body at more than one point. This helps hold the tool securely in the receiver. The center plate has been cut out to reduce the weight of the tool. The radius on the "I" shaped center plate distributes the force of the blow evenly. This allows the technician a little bit of leeway when tapping the horn against the bench. If you miss you still transfer the same amount of force as if you had hit the tool squarely on the bench. The Sax Body Slam tool plugs will fit in most makes of alto and tenor saxophones. If you need a custom-made plug for a larger or smaller tenon please email us.