XHT blades are made from the highest grade of steel for the best cutting and performance money can buy. With the best hardness, strength, and durability in the market, this range of blades is recommended for every mower in the market. They are stronger, harder, and last longer in any environment. CHECK YOUR BLADE CENTER HOLE SIZE BEFORE BUYING. made in the USA! Hands down the ABSOLUTE best aftermarket replacement blade on the market! This sale is for 3 replacement XHT blades. Replaces the following OEM part numbers: KUBOTA K5182-71840 K5575-34330 K5575-97530 3 NEEDED ON 48" CUT Center Hole: 11/16" (.715") Width: 2-1/2" Thickness: .250" Length: 16-5/8" Kubota MID-MOWER DECK: RCK48-GR Kubota MID-MOWER DECK: RCK48-20ZG Kubota MID-MOWER DECK: RCK48P-18BX Kubota MID-MOWER DECK: RCK48S-222Z **DISCLAIMER- WE LIST BLADE PART NUMBERS, MODEL NUMBERS AND DIMENSIONS FOR REFERENCES BUT IT IS UP TO YOU TO BUY THE RIGHT BLADES.