Motorcycle natural rubber tubes,3.00-18 Manufacture supply&OEM accepted Good gas tightness Samples and trial orders available natural motorcycle inner tube 3.00-18Material:Butyl and natural OEM acceptCertificate: ISO9001,2000, CCC. ECE, DOT, SONCAP A.pulling strengh 7-9MPAB.elongation rate:500%C.30%---45% rubber contentD.OEM acceptedE.GCC,SANCAPE ,ISO9001 F.grade :A G.valve: TR4, TR87, TR13 H. ...