Set of three (3) replacement aftermarket USA made blades that fit Kubota models equipped with a 48" cut mower using a 16-5/8" blade with a 0.715" (11/16") center hole, Code K5575-34330. Fits ZG2048, RCK48-GR, RCK48-20ZG, RCK48P-18BX. RCK48S-222Z mowers with deck serial number 15639 and lower. Decks with serial number 15640 and up use a K5576-34350 blade.. Three blades required per 48" cut deck. These are seriously heavy duty 1/4" thick Made In USA replacement blades, remember this listing is for one set of 3 blades.. Blade specifications as follows: Overall Length: 16-5/8" Width: 2-1/2" Thickness: 1/4" Mounting Hole: 0.715 (11/16")