20" by 7.5" deuce rims without the lock ring. However, if you happen to have some extra 5 ton truck rims of the 20" 10 lug bud wheels flavor, the lock rings will fit them. There has been some variation in the size/design of the lightening holes over the years. If you look closely at the rims you will see the size info stamped into the rim as well. Some of the older rims were riveted together rather than welded as they are today.