Product Description The fits Croozer trailers and features the Click & Crooz lockable system. In case of wear or loss you can easily retrofit your bike. Specifications:Over Locknut Dimension:145 mmAxle Diameter:5 mmTechnical Information:Type:quick release, RWSAxle Material:stainless steelClamp Width:148 - 158 mm, 158 - 168 mmFeatures:integrated Click & Crooz hitch (15 mm base)lockableModels:148 - 158 mm: Clamp Width:148 - 158 mmManufacturer Number:122520018 158 - 168 mm: Clamp Width:158 - 168 mmManufacturer Number:122520118Contents:1 x Manufacturer: Croozer GmbH An der Hasenkaule 10 50354 Hürth Germany info@croozer.com