Assuming that you have the RCK72P 1200Z deck , the standard blades are k5975-34360 which when I see on the web , they reference the blades for the 60" in OEP . OEP doesn't themselves show a direct cross. They do show a variety of 72" RC72 Kubota blades in the catalog. Length of 24 1/2" with a center of 1 1/8". No width is given. If you have difficulty, post the measurements of the center and diagonal figures. As noted above, they have a blades by length chart.