These wheel screws are designed for the pro and pro x model only. It is a M8 high tensile cap screw specifically designed for the pro and pro x wheel models.
You can also use a M8 high tensile screw from your local hardware store; as long as it is M8 high tensile around 62mm in length; they will work even if it's not exactly the same head!
Please note: these screws will not fit the Drifter Pro X model wheels. This set does not include a spacer. Please email us if you are after any other parts not listed.