Dear Sir/Madam, Standard or Nonstandard:Standard Type:Timing Belt Material:Rubber Color:Black Material:CR/HNBR Type:MXL, XL, L, H, XH, XXH, T2.5, T, T10, T20, AT5, AT10, AT20. Certificate:ISO/TS16949 Feature:High efficiency factor and Extreme tensile strength Application:chemically-resistant operating requirements and for clean environments Show More