The Delta Bike Hitch Original fits nearly all quick release forks and provides an easy mounting option for your bike. Features: Rigid 6061 aluminum body with 9mm skewer Original model Fits most standard road and mountain bike forks with quick release skewers Dual bolt holes can be used for many applications including truck beds and custom setups Specifications: Dropout Compatibility: 100mm (Standard For Quick Release Bikes) Skewer Length: 8" (203mm) Bolt Hole Spacing: 3" (76mm) Bolt Hole Diameter: 7mm Mounting Surface Dimensions: 4 x 1.75" (102 x 45mm)