Lynx Ringlock Frame The ring lock is a very practical way to put your bike along on lock. It is attached to the frame of your bike and blocks your rear wheel. Although we recommend that you use a chain lock in combination with a wheel lock. This allows you to lock your bike to a fixed object such as a lamppost or a bike rack. specifications: Plug-in option: no Opening width: 56 mm Weight: 470 grams Colour Black Material inside: steel Shell material: plastic Fixing: topboutbevestiging Content: 1 Ringlock 2 Keys