There have two TUBE size ,28.6mm or 25.4mm，pls choose the corret one you need

Prodct descripton:
Material: Chrome 4130 ,heat treating
Fork tube: length 320mm,1 1/8" or 1in 25.4mm threadless ,straight .
Axle size: 100mm
Axle to crown: 395.8mm,
offset: 48mm
Brake: disc brakes Caliper brake, fit for road bike ,gravel ,cyclocross bike.
Weight: appro 1017g/28.6mm ; 987g/25.4mm
Tyre clearance : 45c
Made in China