WORKING PRINCIPLE: The pressure sandblasting kit is used to inject sand into the water system for cleaning. Use dry silica sand, baking soda or washed river sand for better results. APPLICATION: The pressure washer sandblaster kit is mainly used to remove rust, graffiti, paint and grease baking, and is perfect for household and abrasive cleaning! HIGH- PERFORMANCE: Sandblasting kits are made of durable materials, brass and stainless steel, which are resistant to corrosion, abrasion, and stable performance. working pressure can reach 5000PSI and the temperature can reach 60 / 140 F. EASY to USE: 1/4 inch quick connector on of a , suitable for pressure washer. size:Tube length: Material:Metal + plastic colour:Silver + red Contents: 1 * Hose 1 * Pressure Washer Wand (water input) 1 * Sand Wand(sand input) 4 * Hose 4 * Ceramic Nozzles 2 * Rubber Bands Only the above content, other are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.