I have a Bush Hog TM4 finish mower (48", ?) I use on the 3 point hitch of my 1980 Kubota B7100. The blades are pretty well beat & can't locate a direct replacement, Bush Hog part # 62636. Bush Hog web site is no help. My blades are 23.5" long, 2.25" wide, .250" thick & have a .5" mounting hole. I can get 25" blades & cut them down if I can't get the correct ones. Anyone know of a good source.