• The piston is used for a long time or accumulates , causing wear and the like, and can be repaired by using a grinding rod.
• Made from 304 Stainless steel, wear-resistant, durability, compact structure, easy to carry.
• handles for great comfort and firm control.
• Will not scratch or damage the interior of your instrument.
• Fit for trumpet replacement and repairing!

1 Piece Trumpet Piston Grinding Rod