elvedes balhoofdlager 1 1 2 inch 8 mm zilverElvedes headset bearing type MR127 is a high quality steel headset bearing. It has a 1 1 2 inch head tube and an inner diameter of 40 mm. The outer diameter is 51. 8 mm and the height is 8 mm. This headset bearing has an inner angle of 36 degrees and an outer angle of 45 degrees. Color: silver Material: steel Head tube size: 1 1 2 inches Inner diameter: 40 mm Outer diameter: 51. 8 mm Height: 8 mm Inside angle: 36 degrees Outside corner: 45 degrees