Onboard Dual Universal HD Air Compressors 200PSI. For Car/Truck Train Horn Kit. This dual pack compressor kit will provide 200PSI and a 100% duty cycle for your system. These are an ideal air source solution for any air suspension kit, air horns or your on-the-go pneumatic needs. The kit includes two air compressors with standard 3/8″ stainless steel braided hoses and 3/8″ NPT in-line check valves, two heavy duty 40A relays with pre-wired plugs, pressure switch, premium in-line 60A fuse with waterproof holder, two 40A in-line fuses and mounting hardware. Ideal for all vehicles with a 12V system. 12V Permanent Magnetic Motor. Maximum Working Pressure: 200 PSI. Amperage Draw: 23A (46A Both Compressors). You’re already purchasing the item. With our dynamic pricing model, our prices are always competitive. Our prices are some of the lowest that you will find on the internet. Rest assured that you’re getting a good deal when purchasing with us.