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

PT-1800B

ZS41.4/28.6 | ZS41.4/30

1-1/8" Internal Headset
ø28.6x41.4x30 (cups OD 41.4mm)

Height:        5.5+4=9.5mm
Bearings:     Semi Cartridge Bearings  
                    Ball Retainer: 1/8" x 25(R202)
Material:      Steel
Finish:          EDBK

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