100% Brand New Made of High Quality Silicone for Enhanced Strength and Durability 3-Ply Nylon for Strong Reinforcement For High Temperature and High Boost Application Professional Installer is Highly Recommended (No Instruction Included) Working Temperature: -76°F (-60°C) to +500°F (+260°C) Working Pressure: 0.3 Mpa (43.5 PSI) to 0.9 Mpa (130.5 PSI) Bursting Pressure: 2 Mpa Thickness: 4.5 mm Size tolerance: +/-0.5 mm Available Color: Blue, Red, Black, White, Green, Yellow, Purple, Pink, Orange and more Application. Package included: 1 set Silicone hoses kits in Black (8 pieces).