Double bearing design to make your bicycle more lubricated. More flexible. Dual-use design, For 28.6mm Straight Fork or 1.5 Taper Pipe Fork Built-in waterproof and oil-proof gasket. Strictly 6061 aluminum alloy material CNC process, coloring. The is smooth and not easy to lose color. . Name: 44mm external bearing bowl set Model: -44F Specification: 28.6 or 1.5 inch non-standard small cone tube fork Assembly height: 7.3+13=20.3mm Applicable tube: 44-44mm Applicable front fork: standard cone tube/straight tube general Colour:Black Material:metal Size:44mm Package Contents: 1* Bicycle External Cup Headset Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.