Feature:
1. The outer diameter of the upper end of the standard tapered tube is 28.6mm and the outer diameter of the lower end is 39.8mm/1.6in; or the outer diameter of the upper end of the standard straight tube is 28.6mm/1.1in and the outer diameter of the lower end is 30mm/1.2in.
Specification:
Item Type: Bicycle Double Bearing Headset
Material: Aluminum Alloy
Specification: Approx. 44-52mm/1.7-2.0in (Straight Tube and Tapered Tube Universal)
Applicable Situation: Frame Head Tube: Upper Tube Inner Diameter 44mm/1.7in, Lower Tube Inner Diameter 52mm/2.0in. Front Tube: Upper End Outer Diameter 28.6mm/1.1in, Lower End Outer Diameter 39.8mm/1.6in.Tapered Tube: Upper End Outer Diameter 28.6mm/1.1in, Lower End Outer Diameter 30mm/1.2in.
Applicable Measurement Instructions: (The Same Four Data Can Be Applied)
The inner diameter of the upper tube and the inner diameter of the lower tube, to obtain the inner diameter of the upper and lower tubes of frame;
The outer diameter of the upper end and the outer diameter of the lower end are the outer diameters of the upper and lower ends of the front tube.
Package List:1 x Sunflower Top Cover Kit1 x Headset Cover1 x Urgent Loop1 x Upper Bearing1 x Upper Headset1 x Lower Headset1 x Lower Bearing1 x 30mm Bottom File1 x 39.8mm Bottom File