Type 

width

Upper width

height

wedge angle

Normal length range

Inch

Z(O.M)

8.5

10

6

400-2400

11″-95″

A

11

13

8

380-6350

15″-250″

B

14

17

11

40°

560-12000

22″-470″

C

19

22

14

1020-15000

40″-590″

D

27

32

19

2000-15000

80″-590″

E

32

38

25

2160-18000

85″-700