1-1/8" Upper / 1.5" Bottom

F-13C / F-11C

ZS44/28.6 | ZS56/40

1. 1/8” Upper / 1.5” Bottom
Bearings     semi-cartridge bearings
                   upper 5/32"x22, Lower 3/16"x23
Material      Steel, w/ alloy top cover
F11C Lower cup OD 55mm 

click for drawing - F-13C
click for drawing - F-11C