XHT 20", 59/64X11/16" Mulch Mower Blade (Single) - B1MA2430,1 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. (1) blade for 20" cut walk-behind. C to C 2-1/2" Center Hole 59/64 x 11/16" Length 20" Outer Hole 5/16" Thickness .125 Type Medium Lift - Notched Width 2-1/4" Crossed From: MTD6438 MOW MORE OEM-742-0640 MTD/ CUB CADET/ WHITE OEM-742-0740 MTD/ CUB CADET/ WHITE OEM7420640 MTD/ CUB CADET/ WHITE OEM7420740 MTD/ CUB CADET/ WHITE PR1055005 PARTNER 082546 LESCO 335-715 STENS 335715 STENS 490-100-M088 MTD/ CUB CADET/ WHITE 490-100-M115 MTD/ CUB CADET/ WHITE 490-100-0042 ARNOLD 490100M088 MTD/ CUB CADET/ WHITE 490100M115 MTD/ CUB CADET/ WHITE 4901000042 ARNOLD 6438 ROTARY 7-06796 PRIME LINE 706796 PRIME LINE 742-0640 MTD/ CUB CADET/ WHITE 742-0740 MTD/ CUB CADET/ WHITE 7420640 MTD/ CUB CADET/ WHITE 7420740 MTD/ CUB CADET/ WHITE 91659 LASER SALES 942-0640 MTD/ CUB CADET/ WHITE 942-0740 MTD/ CUB CADET/ WHITE 9420640 MTD/ CUB CADET/ WHITE 9420740 MTD/ CUB CADET/ WHITE 98-066 OREGON 98-068 OREGON 98066 OREGON 98068 OREGON A physical address must be provided, NO P.O. BOXES. Thanks for looking!