Easy way to spike your own shoes with 1/4″ x 1/2″ long self tapping screws. You can by them at any hardware store in the metal screws section for about $2.00 for a box (100 Screws). Use a 1/4″ ratchet and socket to apply into shoe. Happy Trails! Golf Equipmentgolf shoesrunningshoesspikespiked shoes