Identify Insert System
There are several different insert styles. Best approach is to remove one of the spikes from your shoe and visually match it up with the fit here. For added assistance, review the helpful video for each spike insert system.
Insert/Fastening System Compatibility
Certain spikes are backwards-compatible or cross-compatible with certain shoe receptacles. Be sure to review the product you are interested and compare the specs with the golf shoe you are trying to buy replacement spikes for.