MXL,XL,L,H,XH,XXH,T5,T10,T20,AT5,AT10,AT20,3M(S3M),4.5M(S4.5M),5M(S5M),8M(S8M),14M(S14M)  

TYPE	Pb(mm)	ht(mm)	hs(mm)	Angleβ°
MXL	2.032	0.51	1.14	40
XL	5.08	1.27	2.3	50
L	9.525	1.91	3.6	40
H	12.7	2.29	4.3	40
XH	22.225	6.35	11.2	40
XXH	31.75	9.53	15.7	40
T5	5	1.2	2.2	40
T10	10	2.5	4.5	40
T20	20	5	8	40
AT5	5	1.2	2.7	50
AT10	10	2.5	5	50
AT20	20	5	8	50

polyurethane belt/endless timing belt/timing belt