These are IG2 spikes for Mizuno golf shoes. I am offering these for sale to someone who has shoes that they fit, and I apologize that they are used. I bent them back and forth by hand, but I didn't see any cracks (I apologize if I missed any). Also, I will include a genuine MIZUNO wrench (although IG2 can be removed with a flathead screwdriver). This wrench can also be used to remove the IG5 spikes from recent MIZUNO golf shoes.