Nylon kingpin adjuster nut. For use on the Sure-Grip Avenger and Avanti plates, Sure-Grip Probe and Rock Nylon Plates, Moxi or Riedell Skates with Powerdyne Thrust or Marvel plates, RC Sunlite plates as well as a number of other plates with 3/8" threaded King Pins.
Sold in a Qty of 1 or 4. Skates have 4 King Pin Nuts total.