Boron Carbide Sandblasting Nozzle Air Sandblaster Tip 4mm and high quality_x000D_ Low density, high hardness and strength corrosion._x000D_ Low thermal conductivity. Super duarable._x000D_ Density: equal 2.48/cm3_x000D_ Microhardness: equal 3500kgf/mm2_x000D_ Flexural strength: equal 400MPa Melting point: 2450 _x000D_ Life for each material: Steel Shot: 2000-2500h, Quartz sand: 1000-1500h, Corundum: 500-1000h_x000D_ Dimensions: 35x20mm/1.38x0.79inch_x000D_ Bore diameter: 3mm, 4mm_x000D_ Model Number:?Sandblasting Nozzle_x000D_ Power Type:?Pneumatic_x000D_ Usage:?Home DIY_x000D_ Cup Volume:?other_x000D_ Application:?Sandblasting Nozzle_x000D_ Type:?Sandblasting Nozzle_x000D_ colour:black_x000D_ Material:Boron carbide_x000D_ Package Contents:_x000D_ 1 * Sandblasting Nozzle_x000D_ Only the above package content, other products are not included._x000D_ 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_