Large Plastic 9mm

Insert Systems refers to the type of receptacle found on the bottom of your golf shoe. The Insert System determines the type of spike that will fit your shoe. Different manufacturers use different types of receptacles, so it’s important to be able to match the right spike to the right Insert System. Currently, there are at least 9 different branded receptacles on the market, with several being cross- or backward-compatible.

The 9mm Large Plastic thread is one that is no longer made but still very much in demand for those who have older golf shoes that they want to keep using. Some of the early Footjoy golf shoes used this thread pattern amongst others.