2pcs Sandblasting Nozzle: 1pcs 35X20X3Mm & 1pcs 35X20X4Mm Applicable to manual box sandblasting machine and box-shaped automatic sandblasting machine. A burst nozzle of the air accelerates and abrasives as the mixture comes out at the end of the tube. The cone and the length of the inlet and outlet nozzles determine the pattern and speed of the abrasive exiting the nozzle. These spare Sandblasting nozzles are for use in many blasting Cabinet units. Low density, high hardness and strength corrosion. Low thermal conductivity. Super duarable. Density: greater than equal 2.48/cm3 Microhardness: greater than equal 3500kgf/mm2 Flexural strength: greater than equal 400MPa Melting point: 2450 CelsiusCelsius Life for each material: Steel Shot: 2000-2500h, Quartz sand: 1000-1500h, Corundum: 500-1000h Dimensions: 35x20mm/1.38x0.79inch Bore diameter: 3mm & 4mm Model Number: Sandblasting Nozzle Power Type: Pneumatic Usage: Home DIY Cup Volume: other Application: Sandblasting Nozzle colour:black Material:Boron carbide Package Contents: 2 x Sandblasting Nozzle Operation: 1. The operator inserts the washer nozzle into a contractor nozzle-support nozzle and nozzle screws, turn to hand, until you sit firmly against the washer. 2. with all the related equipment correctly assembled and tested, the operator points the nozzle to the surface to be cleaned and presses the remote control handle to start blasting. 3. the operator holds the nozzle 18 at 36 inches from the surface and moves smoothly at a speed that produces the desired cleanliness. Each step should overlap slightly. 4. The operator must replace the nozzle once the orifice is worn 1/16-inches beyond its size. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.