Suitable for beginners: mouthpiece patches are designed for easy to replace and comfort from annoying vibrations with simple and replace patches that last and leave no glue residue, they are the ideal for professional musicians or students, educators and saxophone and clarinet beginners performance skill: these sax mouthpiece patches pads correctly seals the top of the mouthpiece for good air tightness, stabilize the tube and keep from annoying vibrations when playing your instrument, it allows you to focus on your play and show your performance skill Good adhesive: they are soft rubber cushions with strong adhesive that keep teeth firmly on the mouthpiece without slipping, non residue adhesive that is sticky and do not off during the use, package includes 160 pieces of sax mouthpiece cushion pads and harmless: mouthpiece cushions are made from thick, black, non-toxic and quality silicone rubber (0.8 mm), they are harmless and reusable Mouthpiece protection: saxophone and clarinet mouthpiece cushion can dampen the uncomfortable high-frequency vibration to the teeth, give you a snug feel under the teeth, you can control the pressure on your teeth and will not leave teeth marks from the sax mouthpiece; Moreover, they help protect your teeth from hurt. size: 0.8mm : rubber colour: black Package Contents: 160 x Sax Mouthpiece Cushions Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.