Oxford anchor 14 bolt down anchor for bike lockoxfordsanchor 14 u lockis a heavy duty hardened steel ground anchor which provides a secure anchor point to which chains can be attached when used in conjunction with a gold rated chain the sold secure gold rated anchor 14 provides the highest level of security for your bike its often the requirement of insurance policies that your bike is fixed to an immovable object when this isnt possible the anchor 14 is ideal it fits securely to con