This sale is for a set of three (3) replacement Finish Mower original equipment blades, fits Models FD1560, FDR1560, FDR1660, AT2660, FD2560, FDR2560, AT2560 - 5' finish mower. Blade is 20-1/2 inches long, 2-1/2 wide and. These are Clock Wise Blades with a 1 mounting hole.