UPDATE: Marty notes that this is called a “hubber”, a correction from “scubber”.
Barney from Barney’s Jeep Parts shared an image of this Easy Engage device. It’s called a “hubber” (no R) and it’s made of a durable plastic. It’s used to engage certain types of Warn hubs.
He added: “They were a dealership counter accessory on a cardboard display, but were not Kaiser or AMC Jeep. It works perfect if the hubs are properly lubricated or not in a “parking” bind. And, it won’t mar the metal as homemade ones can.”

































