Using rubber material of FKMĦ˘NBRĦ˘CSMĦ˘ECOĦ˘NBR/PVC etc. Our products meet the requirements of TL-52424, ES-X60617, GM6289M, SAE J30, DBL6256 etc. And suitable for engine feed/return hose, oil tank feed/return hose, exhaust hose and automatic transmission hose. General diameter is 6mm, 8mm, 10mm.