Grade

•  N30 (1)
•  N35 (4)
•  N38 (1)
•  N38H (2)
•  N40 (5)
•  N42 (52)
•  N45 (10)
•  N48 (2)
•  N50 (3)
•  N52 (8)

Magnetization Direction

•  Axial (85)
•  Diametric (3)

Thickness

•  A. 0.00-3.18mm (66)
•  B. 3.18-6.35mm (129)
•  C. 6.35-9.53mm (84)
•  D. 9.53-12.7mm (138)
•  E. 12.7-19.05mm (85)
•  F. 19.05-25.4mm (135)
•  G. 25.4-50.8mm (88)
•  H. 50.8-254mm (19)

Diameter

•  A. 0.00-3.18mm (4)
•  B. 3.18-6.35mm (15)
•  C. 6.35-9.53mm (10)
•  D. 9.53-12.7mm (22)
•  E. 12.7-19.05mm (10)
•  F. 19.05-25.4mm (10)
•  G. 25.4-50.8mm (17)