1-1/8" Upper / 1-1/8" Bottom

PT-1809

ZS44/28.6 | ZS44/30

1-1/8" Internal Headset
ø28.6x41x30 

Height:          9.5+2.9=12.4   (top cover H:6.4mm )
Bearings:       Sealed AC Bearings
                      41x45°x6.5(R408)
Material:        Top cover:AL6061
​                      Full set AL6061 CNC machined cups
                      w/steel crown race
Finish:            Anodized 
​                      Two colors of anodized alloy upper cup

click for drawing