The Fast Twist Insert system incorporates a female receptacle in the shoe sole and a male fitment on the spike, which is equipped with three threads and our patented one-piece locking ring. The ring keeps dirt and debris out of the shoe’s receptacle, which protects the receptacle and makes spike changing a snap. Some brands with the Fast Twist System are FootJoy, Nike and asics. Spikes with the Tri-LOK fastener fit shoes equipped with the Fast Twist spike systems such as adidas and Callaway.
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