ULTRA LIGHT & SUPER STRONG: Oil Shield Class A Rubber Air Hose is 30% lighter than industry standard hoses and as light a hybrid or PVC hose. It is stronger than the best of rubber hoses. DURABLE: Grease, diesel, oil, fire-sparks? Bring it on! Meets RMA Class A oil resistance for worry-free professional use. Retards fire-sparks from welding etc. and much better than hybrid, plastic or even other rubber hoses. HIGH STRENGTH AND PRESSURE: 300PSI working pressure from -50F to 200F with a burst pressure of 1200PSI (Most '300PSI' hybrids have a 900PSI burst). 1/2" brass M-NPT end fittings. FITTING & DESIGN: OilShield Air hoses come with brass end fittings. Better against rust than steel and stronger than aluminum.