PROLUBE 43625 FLEXIBLE GREASE GUN HOSE, 3500 PSI, 18-INCH, 1/8″ NPT GREASE HOSES ALLOW GREASING ACCESS TO NIPPLES WITH LIMITED REACH. DUE TO THEIR FLEXIBLE CONSTRUCTION, THESE ARE USED FOR GREASING HARD TO REACH GREASE FITTINGS. THERMOPLASTIC CONSTRUCTION WITH 0.14″ (3.6 MM) INNER DIAMETER & 0.33″ (8.5 MM) OUTER DIAMETER. HIGHLY FLEXIBLE WITH MINIMUM BENDING RADIUS OF 1.57″ (40 MM). ZINC PLATED STEEL END CONNECTIONS WITH HYDRAULIC CRIMPING. WORKING PRESSURE: 3500 PSI ; BURST PRESSURE: 11,600 PSI