Trumpet grinding rod is made of superior quality brass material, and with excellent workmanship, which is highly wear-resistant, durable, compact and easy to carry. Trumpet piston repair tool is professional manufacture confirms you higher quality products, you can buy it with ease. And it is the perfect gift for friends, family, and music lovers. This piston grinding rod is a wonderful upgrade replacement for broken or old one, and it also can help improve the overall comprhensive performance. After use, if the trumpet piston becomes dirty or worn, it can be repaired with a grinding rod. And it is After use, if the trumpet piston becomes dirty or worn, it is professional and practical. Item Type:Trumpet Piston Repair Tool Colour:Brass & Black Material:Brass+Plastic Package Contents: 1 x Trumpet Piston Repair Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.