Package Include: Pressure Washer Sandblasting Kit, Replacement Pressure Washer Sandblasting Tips.Wet sand blaster for pressure washer is suction-fed injection of sand into water system. Minimum Flow Rate: 4 GPM. Minimum Pressure: 3000 PSI.Pressure washer sand blasting attachments use dry silica sand, baking soda or washed and dried river sand.ATTENTION: Replacement pressure washer sandblasting tips are designed only for Tool Daily 5000 PSI sandblasting kit.Application: Pressure washer sandblaster kit works for abrasive cleaning. Great for removing rust, graffiti, paint, baked on grease. Pressure washer sand blasting attachments use dry silica sand, baking soda or washed and dried river sand.