The Bellaire 1000 Tire Inflator continuously inflates four P195/65R15 tires. This 150 PSI patented pump uses forced air cooling technology and operates on a 12 volt DC current. Includes an easy to read pressure gauge and on/off switch with fused lighter plug protection. The heavy duty 20 gauge 12 volt power cord is 7 feet long for easy maneuvering and the 4 inches air hose includes built-in storage.