Feature: 1. Has stable air pressure, can eliminate pulses, double cylinders for gas generation, large displacement can be shared by multiple pens. 2. Piston structure, no oil lubrication needed, no pollution of air source, adjustable working pressure, barometer shows air pressure. 3. Dual air pressure function, dual‑speed automatic control switch, automatic stop and start, for normal printing; non‑stop gear, can be used as temporary high‑pressure pneumatic tools. 4. Automatic pressure relief device, no pressure start, the motor is more durable, when the motor accidentally overheats, it will automatically stop for protection, and automatically reset after cooling. 5. The gas storage tank has overpressure protection and is safe and reliable; it can be used with various pneumatic tools such as small gas nail guns and spray guns. Quiet when working, the noise is below 47 decibels. Specification: Condition: Brand New Item Type: Air Compressor Pump Material: Steel + Copper + Glass + PC Plastic Color: As the Picture Shown Power: 1/4HP Automatic Stop and Start: 4BAR (57PSI) Stop 3BAR(47PSI) Start Overvoltage Protection Setting Value: 6BAR (86PSI) Flow Rate: 35-40L/MIN Pressure Adjustment Range: 0.2-6BAR Gas Storage Tank Capacity: 3.5L Application: For high screen requirements, stable air pressure and no impact, pressure-regulated air-supply printing and large-caliber printing pens or multiple pens for art printing at the same time. It can be widely used in surface coloring, decorating, and artistic art painting of beauty manicure, body painting, T-shirt printing, handicrafts, toys, models, etc.; it can also be matched with various small air nail guns, spray guns and other pneumatic tools; It can also provide gas source for industries such as medicine, environmental protection, chemical industry, scientific research and automation control.. Package List: 1 x Air Compressor Pump 1 x User Manual