PT-1800NT/PT-1800AT

ZS44/28.6-26tpi | ZS44/30

1-1/8" * 26T, Internal Threaded Headsets

Ø25.4 * 44 *30

Height: 14.5+ 3.8= 18.3mm

Bearings: 5/32" * 22 ball retainer

Material: Steel cups & crown race

Finish: EDBK

PT-1800NT steel top cover : 143g

PT-1800AT alloy top cover : 133g