Set of three (3) replacement USA made mulching blades that fit Kubota models equipped with a 60" cut mower that measure 20-1/2" long with a 1-1/8" Center mounting hole and include the models on the list below with their related decks. These blades are made by Rotary Corporation and are very high quality USA made blades. Blade specifications as follows: Overall Length: 20-1/2" Width: 2-1/2" Thickness: 0.240" Mounting Hole: 1-1/8"(28.6mm) Fits Models: B1550 with RC60-B 60" Deck B1700 with RC60-24B 60" Deck B1750 with RC60-B 60" Deck B2100 with RC60-24B or RCK60-24B 60" Deck B2150 with RC60-21B 60" Deck B2400 with RC60-24B or RCK60-24B B2410 with RCK60-24B 60" Deck B2710 with RCK60-24B 60" Deck B2910 with RCK60-27B 60" Deck B7100 with RC60-71B 60" Deck B7400 with RCK60-24B 60" Deck B7500 with RCK60-24B 60" Deck B7510 with RCK60-24B 60" Deck B7610 with RCK60-24B 60" Deck B7800 with RCK60-27B 60" Deck FZ2100 with RC60-FZ21 60" Deck FZ2400 with RC60-FZ21 60" Deck F2000 with RCK60-F30 60" Deck F2100 with RCK60-F30 60" Deck F2260 with RCK60-F30 60" Deck F2400 with RCK60-F30 60" Deck F2560 with RCK60-F30 60" Deck F3060 with RCK60-F30 60" Deck GF1800 with RC60-G20 60" Deck G1800 with RC60-G20 60" Deck G1900 with RC60-G20 60" Deck G2000 with RC60-G20 60" Deck ZD18 with RCK60-21Z 60" Deck ZD21 with RCK60-21Z 60" Deck If you are not sure if these will fit your mower just send me an email with your model number and I will be happy to confirm them for you! We have more lawn and garden items available than we have time to list them. If you don't see the parts you need listed please contact us we would love to earn your business. We are listing new items frequently so please check our store often. Part Numbers: 76539-34330, K5647-3433, K5649-3434, 70000-006020, 70000-00606, 75000-25001, K5651-34340 We stock a wide variety of replacement parts for most Lawn and Garden and Agricultural Equipment please contact us if you have any questions.