Do you have the wrong fasteners on your floormats? Or, are you missing fasteners? There are two types of floormat fasteners, the circular style (these simply snap-down) and the oval twist-lock style (oval shaped, and they have a turning fastener).
This is a full set of floormat mounted fasteners, it includes eight fasteners in your color and style. Each piece can be easily connected to your carpet or rubber floormats, and will hold them securely.