Hireko Champ Scorpion Stinger Golf Spikes Includes 18 replacement cleats that fit Q-Lok insert systems Soft durometer TPU and spring flex traction provide exceptional grip and comfort Anti-clogging Visible wear indicator C turn solid when spikes need to be replaced Green-friendly to minimize damage to the course Q-Lok spike. Refer to Champ Fitting Guide at http://www.champspikes.com/images/08SpikeGuide.pdf. Improved performance with enhanced technology Innovative wear indicator Soft comfort feel, solid traction Green friendly, easy to clean