Product detail: Brand: ROCKBROS Colour: Black Material: Aluminium alloy+ABS seat plate+PP mudguard Product load: 25KG standard load Fit for: 26‘-29’ mountain bikes Suitable size: Fit for seat post Diameter≤3.2cm(1.26") Seat Stay length≤3cm(1.18in) Seat Stay Width≤3cm(1.18in) Compatibility: Can be used with panniers, backpacks, baskets Package Dimensions: 44*11*24.5cm/ 17.32*4.33*9.65inch Weight: approx.1700g /3.75lb DESIGNED WITH FENDER：The mudguard can be mounted in both the front and rear 4-hole positions, allowing a vertical adjustment range of 320°. For added convenience, you have the option of fitting just the mudguards without the bike rack, giving you a versatile choice for your excursions. NOTE: Suitable for seat post diameter≤3.2cm(1.26").seat post length≤3cm(1.18in).seat post width≤3cm(1.18in). Not suitable for rear suspension bike, flat tyre bike, soft-tailed bike, carbon fibre bike, folding bike and special seat stay. * This product does not include lights. Lights are shown in the instruction manual, but due to current laws and regulations in Germany, lights are currently not included in this product.