1/Materials: EPDM, Silicone,NBR, NR,CR etc. 2/various coolant hose,radiator hose 3/reasonable price and good quality Technical specifications of the auto engine coolant hose:1) Usage category: for charge air, coolant and water, on intercooler, radiator, turbocharger and supercharger, and other systems.2) Material:EPDM3) resistance temperature range: -40°C to 165°C4) Working pressure : 0.3Mpa-1. ...