
Oversized, poorly designed flange. |

Bargain basement trip-hazard flange. |

Killer flange, as in "ouch!" |

Dorky flange covers eventually get trashed. |

Flange covers just mask problem... |

Problem being detachable flanges (i.e., easy pickings for bike thieves). |

Don't let just anyone install your rack — it could end up looking like this. |

Combination wedge anchor and rawl spike. |

Properly installed flange. |

Example of stainless security fasteners. |