60" Cut Kubota Blades, Set of 3, Code 70722-34330 Fits MR6000, RCB60-1/E/Ae. These blades have a 11/16"" (17.5mm) round mounting hole. Note:Please review the dimensions for this blade and check the mounting hole dimensions against your old blades as Kubota blades come with many different mounting hole sizes and it is easy to order the incorrect blades. This dimensions can be found in the Product Features section of the products listing

• 11/16" (17.5mm) Round Mounting Hole
• 20-7/16" Length, 2" Width, 0.204" Thick
• Made in USA by Rotary Corp

11/16" (17.5mm) Round Mounting HoleKubota