ITEM NAME:304 Stainless Steel Piston Grinding Rod for Tool Accessories Description: The piston is used for a long time or accumulates dirt, 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. Anti-slip sponge handles for great comfort and firm control. Will not scratch or damage the interior of your instrument. Fit for trumpet replacement and repairing! Specification: Material: Stainless Steel Size: 30cm / 11.8inch Package Includes: 1 Piece Trumpet Piston Grinding Rod Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement. SKU: DMO0013075678016403.1 Piece Trumpet Piston Grinding Rod. Made from 304 Stainless steel, wear-resistant, durability, compact structure, easy to carry. Material: Stainless Steel.