You are purchasing a set of 16 12mm lug nuts with a 1.50 thread pitch and a spline drive head...the key is included. Fits the Polaris 900 XP Ranger Fits the XP1000 RZR Fits any Polaris with the 12MM wheel studs. They will also work with Can-Am X3. Fits a Honda Pioneer 1000 only as well. If you are not sure if they will fit your machine please ask. They will work with your aftermarket wheels from ITP, STI, MSA and many others.