First and Reverse Brake

Flange Thickness:
No.68 5.4 mm (0.213 in.)
No.67 5.2 mm (0.205 in.)
No.50 5.0 mm (0.197 in.)
No.51 4.8 mm (0.189 in.)
No.52 4.6 mm (0.181 in.)
No.53 4.4 mm (0.173 in.)
No.54 4.2 mm (0.165 in.)
No.55 4.0 mm (0.157 in.)