20 Pcs Ceramic Sandblaster Nozzle Air Siphon Sand Blasting Tools Sandblasting Parts Ceramic Nozzle(6 Surface sandblasting, marble engraving. Instead of cast iron, alloy steel blast nozzle,saving steel, reduce the cost. Strong wear resistance and high efficiency. Mainly used in machinery, industrial machinery parts, such as metallurgical casting, casting surface deoxidization. Specification: Brand Length: Approx. 35mm Outside diameter: Approx. 15mm Bore diameter: Approx. 6mm Colour: Purple Material:ceramics Package Contents: 20 * Ceramic Nozzles 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.