These were off a Kubota tractors rear wheels. I mounted them backwards on my MF T035 tractors front wheels but don’t need them anymore. The mounting holes are as follows, square pattern is 7.5” per side or about 11” across. The triangle pattern is 8.125” per side. The weights are about 6” thick and the diameter that goes on the Kubota’s wheel rim is 16” while the outside is 14.75” Remember the photo shows them mount backwards on my MF tractor. There is a casting #8233 on them. $250 cash Call, text or email Rick 785-5six9-seven78eight.