Water, abrasives and air are mixed inside the nozzle, which make it dustless working. water consumption with these nozzles in much less than with other wet blast systems. long life because of the liner material boron carbide. package include： 1pcs sandblast nozzle. 1pcs coupling 40mm . 1pcs water hose (1m) Boron carbide/b4c nozzle, sand blast nozzle, us $ 3075 / piece, new, hunan, china, b4c sand blasting nozzle.source from zhuzhou better tungsten carbide co., limited on alibaba. Find many great new & used options and get the best deals for sandblasting nozzle boron carbide tungsten nozzles 8x20x35mm at the best online prices at ebay! free shipping for many products! If you are interested in china boron carbide nozzle, you will be amazed by the variety of the product choices such as spray nozzle, boron carbide, b4c nozzle. besides, their competitive & cheap price of boron carbide nozzle factory would get you an edge in your own market.