Usage Tips:Applicable to box manual sandblasting machine and box type automatic sandblasting machine. Can be used for sand glass,sandblasting,surface polishing processing,machinery parts. A blast nozzle accelerates the air and abrasive as the mixture exits the end of the hose. The taper and length of the nozzle's inlet and outlet determine the pattern and velocity of the abrasive exiting the nozzle. The composition of the liner material determines its resistance to wear. Designed for surface cleaning,rust removal and glass,aluminum alloy and other decorative surface sandblasting,marble engraving. Specifications: Condiiton: Brand boron carbide Nozzle Internal diameter:8mm Operation: 1.The operator inserts the nozzle washer into a contractor-thread nozzle holder and screws in the nozzle, turning it by hand, until it seats firmly against the washer. 2.With all related equipment correctly assembled and tested, the operator points the nozzle at the surface to be cleaned and presses the remote control handle to begin blasting. 3.The operator holds the nozzle 18 to 36 inches from the surface and moves it smoothly at a rate that produces the desired cleanliness. Each pass should overlap slightly. 4.The operator must replace the nozzle once the orifice wears 1/16-inch beyond its size. colour:Silver Material:Aluminum alloy + boron carbide size:35 x 20 x 8mm Package Contents: 1 x Air Sandblaster Gun 1 x Boron Carbide Nozzle Only the above package content, other products are not included. Note: Light shooting 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.