Type, cross-section dimension and length of the blet

型号 Type	顶宽D mm Upper width(D)	带高H mm Height(h)	e mm	夹角α mm Wedge angle(a)	露出高度 mm Emerged height	最多联组根条 Maximum number of the belts in group	长度 Length of the belt
9J/3V	9.7	9.7	10.3	40.0	5.1	18	1240~5200
15J/5V	15.7	15.7	17.5	40.0	6.4	16	1240~16000
25J/8V	25.4	25.4	28.6	40.0	7.6	12	2540~1600
B				40.0		16	1240~5200
C				40.0		14	2540~16000