Cub Cadet MTD Blade spindles Set of 3 replaces part #"s 918-04126A / 918-04126B 918-04125Fits series LT, SLT and RZT Zero Turns with 50 inch deck using star pattern blade center hole.These will also fit Troy Bilt 50" zero turns using the star shape pattern blade center.Please note as with all blade spindles you must use your old mounting bolts as they are self-tapping and cut the threads as you screw them in.To make this easier for our customers with out air tools we have cut the threads for you. Mounting bolts not included.Quality Aftermarket replacement set