For Removing Carbon Deposits Designed for removing carbon deposit from every inlet path quickly and easily. Several Adaptors and Accessories Included: Filter, filter cartridge, sieve, sand blast gun, safety goggles, sand suction hose connector, 5 adaptors and 2 bags of walnut sand. Fast and Effective Machine: The carbon crusher sprays walnut sand into the engine inlet pipe at an extremely high pressure which colides around the inlet pipe, clearing and removing all of the carbon deposit from the inlet valveand cylinder wall.