FACTORY TESTED TO ASSURE LEAK-FREE OPERATION. 4 UNIVERSAL PUSH-TO-CONNECT 1/4"" BODY COUPLERS FOR EASE OF OPERATION. LIQUID-FILLED GAUGE FOR DURABILITY AND MORE ACCURATE READING CLOSER TO JOB SITE. HIGH-FLOW REGULATOR FOR INCREASED PERFORMANCE. QUADRAPORT CAN OPERATE AT TWO DIFFERENT PSI SETTINGS AT THE SAME TIME FOR A WIDER VARIETY OF APPLICATIONS. 3/8"" DIAMETER INLET FITTING ALLOWS HIGHER AIR FLOW AND REDUCES PSI DROP WHEN USED WITH 1/2"" DIA. HOSE. ROBUST CARRY HANDLE FOR ADDED PROTECTION. HANG HOLES FOR CONVENIENT SECURE REMOTE POSITIONING