MXL,XL,L,H,XH,XXH,T5,T10,T20,AT5,AT10,AT20,3M(S3M),4.5M(S4.5M),5M(S5M),8M(S8M),14M(S14M) TYPEPb(mm)ht(mm)hs(mm)Angleβ°MXL2.0320.511.1440XL5.081.272.350L9.5251.913.640H12.72.294.340XH22.2256.3511.240XXH31.759.5315.740T551.22.240T10102.54.540T20205840AT551.22.750AT10102.5550AT20205850 polyurethane belt/endless timing belt/timing belt