Product Name: 550W/750W-3-70L Oil Free and Silent Air Compressor Double Head Model NO.: SY750-3-70L Refrigerant Type: Air Compress Level: Single-Stage Structure Type: Closed Type Cylinder Position: Vertical Cylinder Arrangement: Duplex Arrangement Cooling System: Air Cooling Lubrication Style: Oil-free Motor: Copper Line Trademark: YUNMEI Transport Package: Carton Packing Specification: 0.19CBM Origin: China HS Code: 8414804090 Product Description Main Features1.Heavy cast iron body: heavy load, long stroke, low fuel consumption, low noise2.Cylinder: made of high-grade cast iron, strength, good lubricity, wall by the fine honing, wear-resistant, durable3.Piston ring: good elasticity, excellent wear resistance, low oil consumption, not easy to make the valve group carbon deposition and loss of oil to burn the crankshaft and connecting rod.4.The crankshaft, connecting rod, piston: well balanced, wear resistance, high strength, smooth running balance.5.High reliable and durable valve; strong aluminum alloy body, light and heat.6.The motor provides reliable power, low voltage startup and running performance strong fan cooled motor and body; special shock proof design.7.Double nozzles, were used to direct the exhaust and pressure exhaust; pressure switch with push button, safe and convenient8.Oil free,silent,protect-environment,suitable for dental use.