[DURABLE MATERIAL]: The sand nozzles are made of hard and lightweight boron carbide, which makes the tip of the blast nozzle more durable and lasting, and has a serviceable life than ceramics, tungsten carbide and other materials [ADVANTAGE OF BORON CARBIDE]: boron carbide sandblasting nozzle has many advantages, such as strong wear resistance, high hardness, high&low temperature resistance, high pressure resistance, etc. This will be a good choice for you.[AVAILABLE FOR MULTIPLE MEDIA]: high-quality boron carbide sandblasting nozzles are suitable for a of media, such as glass beads, silicon carbide, alumina, , and other medias. So you 't have to worry that are not suitable for your tools, please rest select.size:35x20x8mmMaterial:boron carbidecolour:BlackPackage Contents:1 x Boron carbide nozzleOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.