Insulators as follows - $12 for all three plus actual postage

Round 3" diameter and 1 1/4" thick with a smooth base -- just a few flakes on the outer rim

horse shoe shaped 3 1/4" X 3 3/4" and one inch thick -- cool bullseye base and nice condition

horse shoe shaped 3 1/4" X 3 3/4" and 3/4 inch thick -- lined base, a couple nicks and light bruising from use