Hybrid Material: The hybrid hose are made of rubber&PVC blended, Lighter than rubber hose, stronger than PVC, braided polyester for strength and durability, oil abrasion kink resistant Features: Durable PVC and thermoplastic rubber hose remains flexible in cold weather -40℉ to 180℉, Reinforced with braided polyester for extra strength. Bend restrictor prevents kinking near connections. Brass fittings for strength and durability. All those are prolong the using time 1/2”x 50ft.: Inner Diameter: 1/2 Inch(12.7mm); Outer Diameter: 18.7mm; Hose Length: 50 Feet. Suitable for industrial, contractor, or household use. It is ideal for connecting supply lines, compressors, hose reels. The maximum working pressure is 300PSI 3/8” Fittings: This Kit includes 1 piece 3/8 inch I/M air coupler, 1 piece female plug and male plug for your tools and equipment to ensure a secure and efficient connection High Flow: This air compressor hose and fittings are intended for air shop, garage or pneumatic application that require over 60+ SCFM. 99 SCFM Max air flow 1/2 Inch x 50ft. Hybrid Air Hose with 3/8 in. MNPT Ends and Bend Restrictors, 3PCS 3/8” Air Coupler and Plug Kit, Air Compressor Hose Fittings and Accessories