Mulching Blade / Murray 56217 Pack Size:1 MURRAY 56217, MURRAY 56210, MURRAY 056217E701, MURRAY 056217E701MA, MURRAY 5553MA EDGEWATER 155663, GREEN MEADOW UMU45, OREGON 97-009, PRIME LINE 7-06405, ROTARY 6215, SUNBELT MU-2622, SUNBELT SB-6215, SUNBELT B1MU2622, SUNBELT B1SB6215 Murray 30" side discharge decks 1989 and newer S/F: Formed , Center Hole: 13/16 ", Length: 30 1/4 ", Width: 2 1/2 ", Thickness: .164 "