[Size] ID: 5/8" (16mm), tolerance is ±0.5mm; OD: 0.94" (24mm), tolerance is ±0.6mm; Length: 50 feet.[Material] Made of EPDM rubber.[Parameter] Working Pressure: 100psi; Burst Pressure: 300psi; Temperature Range: -40°F to 257°F; Min Bending Radius: 128mm. 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.