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

PT-1811H

ZS42/28.6 | ZS42/30

1-1/8" Internal Headset
ø28.6x42x30

Height:        15.9+3=18.9mm      (top cover H:13mm )
Bearings:     Semi Cartridge Bearing
                    Ball Retainer: 1/8" x 25(R202)
Material:      Top cover: AL6061
                    w/steel cups & crown race


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