Look's Keo Bi-Material Cleats are for use with Look's Keo pedals. These fine cleats are made of polyamide nylon with Teflon toe and heel inserts for easy entry/exit, efficient pedaling and durability. They are also designed not to squeak while you're pedaling. Plus, there are wear indicators that tell you when it's time for new cleats. These cleats are available in 3 colors, each with a different amount of float (lateral movement). The Gray model has 4.5 degrees of float. The Red offers 9 degrees. And, the Black has no float (fixed position).