A&I XHT 21-3/16", 6 PT Star Mower Blade (Single) - B1MA2416,1 Replacement XHT Lawnmower blade. XHT(Xtreme Hardness & Toughness) blades are 25-40% harder than standard lawnmower blades. Benefits of the HXT blade are sharper and longer lasting cutting edges. More resistance to bending. Tighter tolerances in the aftermarket vs. OEM. XHT blades also offer greater impact toughness. (2) blades for 42" cut. Fits 13AT604G401. C to C 2-1/2" Center Hole 6 pt. star Length 21-3/16" Outer Hole 5/16" Thickness .156 Type High Lift - Notched Width 3" Crossed From: OCC-742-04312 MTD/ CUB CADET/ WHITE OCC-742-0616 MTD/ CUB CADET/ WHITE OCC74204312 MTD/ CUB CADET/ WHITE OCC7420616 MTD/ CUB CADET/ WHITE OEM-742-04308 MTD/ CUB CADET/ WHITE MTD1031 MOW MORE MTD1032 MOW MORE BL-014 J. THOMAS BL014 J. THOMAS 1031 ROTARY 1032 ROTARY 11233 ROTARY 335-707 STENS 335-711 STENS 335707 STENS 335711 STENS 4415354 A & I MEGA-CROSS 4442432 A & I MEGA-CROSS 60-7118-6 A & I MEGA-CROSS 6071186 A & I MEGA-CROSS 490110C109 MTD/ CUB CADET/ WHITE 490110C122 MTD/ CUB CADET/ WHITE 490110M108 MTD/ CUB CADET/ WHITE 66891923 RURAL KING 7-044034 PRIME LINE 7-044036 PRIME LINE 7044034 PRIME LINE 7044036 PRIME LINE 7420616 MASSEY FERGUSON 7420656 MTD/ CUB CADET/ WHITE 7420656 TROY-BILT 7424360 MTD/ CUB CADET/ WHITE 7424360TROY-BILT 742616A MTD/ CUB CADET/ WHITE 91032 LASER SALES 91033 LASER SALES 942-04087 MTD/ CUB CADET/ WHITE 942-04087 TROY-BILT 942-04126 MTD/ CUB CADET/ WHITE 942-04126-X MTD/ CUB CADET/ WHITE 942-04308 MTD/ CUB CADET/ WHITE 942-0616 TROY-BILT 942-0616-X MTD/ CUB CADET/ WHITE 942-0616-X TROY-BILT 942-0616A BOLENS 942-0616A MTD/ CUB CADET/ WHITE 942-0616A TROY-BILT 942-0656 MTD/ CUB CADET/ WHITE 98-059 OREGON 98-153 OREGON 98022 TORO / WHEEL HORSE 98053 OREGON 98059 OREGON 98153 OREGON This is an aftermarket product, not an OEM. A physical address must be provided, NO P.O. BOXES. Thanks for looking!