The Cortina U4 Transport fork is an excellent choice for women's bikes in sizes 50 and 57 cm. With a beautiful Black Graphite Matte finish and a roller brake bracket, this fork offers both style and functionality. The fork has a specific 28-inch diameter and a 1-1/8x305 inch steerer tube diameter. The fork brake system is a drum brake, ensuring reliable braking performance. With a 55 thread length and a 30 mm tube length, this fork is a perfect fit for your bike. The fork is not adjustable and does not have a lockout function, yet it still offers a stable and comfortable riding experience. Specifications: - Color: Black Graphite Matt - Brand: Cortina - Primary base color: Black - Color number: MZG 40142 Matt - Fork type: Fixed - Ahead/thread: Thread - Thread length: 55 - Dynamo hook: No - Suitable for wheel size: 28 - Adjustable: No - Lock out: No - Tube length: 30 - Fork brake system: Drum brake - Fork tube diameter: 1 inch