The older Snapper mowers used a 7/8" x 3-5/32" shaft with two woodruff keyways. The new Snapper mowers use a 25MM x 3-5/32" with two woodruff keyways in it. You need to meausre your shaft before you buy anything for this. If you happen to buy one with the wrong shaft diameter, you can buy a new pulley and blade adapter from any Snapper dealer. The push models typically have a shorter shaft on them.
