Mulching Blade / Murray 071584E701MAPack Size:1Murray 071584E701MA, Murray 71584-853, Murray 71161E701, Murray 471161, Murray 71584E701, Murray 4711613, Murray 71584E701MA, Partner PR1055014Home Depot 482808, NHC 212-3355, NHC MU2626, Oregon 97-023, Rotary 9228, Sunbelt B1SB6160, Sunbelt B1MU2626Murray most 21" walk behinds (1996 and newer); 21545X6A, 21674X62A, 21675X24A, 21675X30A, 21675X92A, 21678X30A, 21678X99A, 21698X99A, 21765C, 21765X24A and 21778X199A; for 21" deckLength: 20 3/4 ", Center Hole: 3/8 ", Outer Hole: 3/8 ", Center To Center: 4 ", Width: 2 1/4 ", Thickness: .134 "

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