The abus wba100 granit wallground bike anchor lock is an incredibly tough anchor which screws to the floor or wall in your garage to provide a permanent fixing bolt to your to attach your bike to it fixes to the floor through four bolts and uses corrosion resistant 16mm thick hardened steel to protect against sawing and bolt cropping the abus wba100 granit wallground bike anchor lock is wider to be able to fit shackle or steel o flex locks and folds flat when not in use abus wba10