Champ Scorpion Stinger Q-Lok Spikes:

Enjoy improved performance traction with Champ’s enhanced spike technology. These spikes come with an innovative wear indicator so you'll never lose precious traction. The bottom of the spike is equipped with a black “C.” As the spike wears, the “C” will become less and less visible, letting you know when it’s time to replace it. Each package includes 22 soft spikes.

Q-LOK — Eliminates the traditional threaded system for fastening spikes to shoes. Makes spike replacement a breeze.