Front I.S. Adapter - P.M. O160mm - F40 O203mm Upgrade your bicycles braking system with this high-quality front I.S. (International Standard) adapter. Designed to seamlessly connect P.M. (Post Mount) calipers with a 160mm rotor to F40 (Flat Mount) fork mounts with a 203mm rotor, ensuring optimal braking performance and compatibility across different bike setups. Compatibility: P.M. O160mm to F40 O203mm Material: Durable and corrosion-resistant Application: Suitable for mountain bikes and road bikes requiring versatile brake mounting options