[ MATERIAL]: The sand nozzles are made of hard and boron carbide, which makes the tip of the blast nozzle more and lasting, and has a longer serviceable life than ceramics, tungsten carbide and other materials! [ADVANTAGE OF BORON CARBIDE]: Our boron carbide sandblasting nozzle has many advantages, such as strong wear resistance, high hardness, high&low temperature resistance, high pressure resistance, etc. This be a good choice . [AVAILABLE FOR MULTIPLE MEDIA]: Our high-quality boron carbide sandblasting nozzles are suitable for a variety of media, such as glass beads, silicon carbide, alumina, , and other medias. So you don't have to worry that our products are not suitable for your tools, please rest select. size:35x20x6mm Material:boron carbide colour:Black Package Contents: 2 x Boron carbide nozzle Only the above package content, other products are not included. Note: Light 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.