Anchor that you attach to the ground or wall to create a permanent point to which you can lock your bike. The "horseshoe"with a cross section of 16mm. In the package are screws for fixing the anchor to the ground and 2 drill bits. When the anchor is not in use the"horseshoe" is folded down - reducing the risk of tripping etc. Dimensions: 19cm diameter anchor, 4.2cm height anchor Protection level: 10/10