DESCRIPTION Hose Size: [Size] ID: 3/8" (9.5mm), tolerance is ±0.6mm; OD: 5/8" (16mm), tolerance is ±0.8mm; Length: 5 feet. [Material] Made of EPDM rubber. [Parameter] Working Pressure: 100psi; Burst Pressure: 300psi; Temperature Range: -40°F to 257°F; Min Bending Radius: 152mm. Meets and exceeds SAE 20R3 Standard Wall Class D-2 requirements. [Medium] Compatible with coolant, water, antifreeze, etc. [Application] Used in hot water heater, engine's cooling system, connecting the radiator to the overflow reservoir, etc.