Shimano FD-5800 Front Derailleur Clamp Bolt & Radius Washer Description: The Shimano FD-5800 Front Derailleur Clamp Bolt & Radius Washer is designed to attach select Shimano braze-on style front derailleurs to the brazed-on tab on a bicycle frame. The included radiused washer allows the position of the derailleur cage to be adjusted for optimal chain clearance and shifting performance. Features: Bolt for securing select Shimano braze-on front derailleurs to the frame Includes one (1) bolt and one (1) radiused washer See compatibility tab for a list of compatible derailleurs Specifications: Bolt Size: M5 x 15mm (Length)