Set of three (3) replacement aftermarket USA made blades Compatible With Kubota models equipped with a 54" cut mower Blade specifications as follows: Overall Length: 18-11/16" Width: 2-1/2" Thickness: 0.240" Mounting Hole: 1-1/8" Fits Models: RC54-24B RK54-71B RC54-B RC54-FZ21 RC54-G20 RC54-G19 RCK54-18Z RCK54P-400Z Set of three (3) replacement aftermarket USA made blades Compatible With Kubota models equipped with a 54" cut mower that include the RC54-24B, RC54-71B, RC54-B, RC54-FZ21, RC54-G20, RC54-F19 and RCK54-18Z decks. These are high quality Rotary Brand replacement blades, remember this listing is for one set of 3 blades.. Blade specifications as follows: Overall Length: 18-11/16" Width: 2-1/2" Thickness: 0.240" Mounting Hole: 1-1/8" Fits Models: RC54-24B RK54-71B RC54-B RC54-FZ21 RC54-G20 RC54-G19 RCK54-18Z RCK54P-400Z