Add these o-rings to your trumpets 1st and 3rd valve slides to completely eliminate the unwanted sound of metal to metal contact without lowering the default pitch of the trumpet.
Measuring at just 1/32nd of an inch, they are the thinnest trumpet slide bumpers available on the market! They are custom manufactured with nitrile material specifically for the trumpet consumer. They resist chemicals, oils and acids and have a high tear strength.
Also included is a smaller o-ring to be used on the bumper of a Bach trumpet or thumb screw of a Yamaha trumpet.