It is made of metal. I will have to measure tomorrow morning. Found it in my backyard. I started by picking weeds but then I started finding cool treasures so now I'm looking for awesome stuff and digging up weeds.
It looks like there at one time was rubber around it but most that fell off when it came from the dirt. Bear with me I'm not that good at a tape measure. But I think these are the measurements 1/2" wide. Like the top. One side to the other is 5 1/2 with out the rubber and then from top to the spoke 3/4". Does this sound at all right. Sorry never have used a tape measure much. Lol