Mulching Blade / Murray 71548E701MAPack Size:1Murray 71548E701, Murray 43865E701, Murray 471548, Murray 471548MA, Murray 71548E701MAEdgewater 155623, NHC 212-0811, Oregon 97-121, Prime Line 7-04787, Rotary 6142, Sunbelt B1SB6142Murray 20" MK; 1990-1996 mulching mowersLength: 19 3/8 ", Center Hole: 3/8 ", Width: 2 1/4 ", Thickness: .134 "