100% pure silicone For Mazda 3 04-07 silicone radiator hose kit JDMPacking: Standard export package 3/16" wall thickness4 -ply, polyester reinforcementSmooth wipe finishWithstands temperatures from -40 to 500°FResistant to UV, water, ozone, oxygen, and oilWorking pressure: 120psiBurst pressure: 300psiBuilt-in ISO9001 certified facility100% pure silicone, not rubber composite