DOP91-363 Jacobsen Blade for left hand cut fits HR511 model , needs four of # DOP91-363 and three of # DOP91-364 per deck. Size: Length: 23", Center Hole: 17/32", Outer Hole: 13/32", Center to center: 2-7/8", Width- thickness: 250-250. Replaces # JT391039.
{Blades are sold individually}