Blade is designed/sized to replace the following Toro Blade numbers: 106-2247-03, 106-8744-03, 110-6568-03, or 110-1857-03 Can be used as a mulcher even without a mulch plate. If used with the bagger only about 1/3 of the clippings go in the bag, the rest are mulched back in the grass and you wont see them (unless the grass is very high). Use only as pairs.