Upgrade your Kubota mower's performance with these premium USA Predator mulching blades. This set of three heavy-duty replacement blades is specifically designed to fit Kubota models ZD326S and ZD21F-60P with 60-inch cutting decks. The 1-1/8 inch center hole ensures precise fitment and proper balance during operation. These mulching blades are engineered to deliver superior cutting performance, efficiently chopping grass clippings into fine particles that decompose quickly and nourish your lawn. Compatible with Kubota part number K5647-34340, these blades are manufactured to meet rigorous quality standards. Perfect for maintaining large properties, these durable replacement blades help maintain your mower's optimal cutting capability while saving you time and effort during lawn maintenance.