The Cortina U4 Family fork is a specific model suitable for 28-inch bicycles. The fork has a striking Opal Green Matte color and is made by Cortina. This fork is designed for the Cortina U4 D bicycle and has a fixed construction. The fork is suitable for use with wire handlebars and has a thread length of 55 mm. With a tube length of 31 mm and a drum brake system, this fork offers reliable braking performance. The steerer tube has a diameter of 1.125 inches. Product specifications - Specific size: 28 inch, 1-1/8x305 - Primary base color: Green - Brand: Cortina - Receipt description: Fork Cortina U4 D - Fork type: Fixed - Ahead/thread: Thread - Thread length: 55 - Dynamo hook: No - Suitable for wheel size: 28 - Adjustable: No - Lock out: No - Tube length: 31 - Fork brake system: Drum brake - Fork tube diameter (inch): 1.125