Notched Air-Lift Blade / Exmark 103-6583-SPack Size:1Ariens 04919100, Ariens 4919100, Ariens 04920600, Ariens 00273000, Bad Boy 038-4820-00, Bad Boy 038-5350-00, Bobcat 112111-01, Bobcat 03239, Bobcat WMTA32061, Bobcat 32061, Bobcat 32061A, Bobcat 2722543-01, Bobcat WM132061, Exmark 103-2527, Exmark 103-6583, Exmark 103-6583-S, Exmark 403059, Exmark 103-2507, Exmark 323515, Exmark 520843S, Exmark 1520843, Exmark 1-403086, Exmark 103-6518, Exmark 1-323515, Exmark 403148, Exmark 103-6581, Exmark 1-403059, Exmark 1-403026, Exmark 103-6738-S, Exmark 103-6583-S, Exmark 103-6581-S, Exmark 1-403148, Ferris 5020843, Ferris 1520843, Ferris 1520843S, Ferris 20843, Giant Vac 0640, Gravely 04919100, Husqvarna 539 10 03-40, Kees 483046, Lesco 013418, Lesco 050227, Lesco 12111-01, Simplicity 5020843SM, Simplicity 5020843, Snapper 1-7036, Snapper 7017036, Snapper 03239, Snapper WMTA32061, Snapper 77378, Snapper 7077378, Snapper 101366, Snapper 100340, Snapper 7-7386, Snapper 7-6675, Snapper 7017036YP, Snapper Pro 5020843, Toro 103-2527Aladdin UBC3, Aladdin UBC6, Aladdin UGAT1, Dealer Choice 50-1955, Dealer Choice 50-1945, Dealer Choice 50-1920, Dealer Choice 50-1938, Dealer Choice 50-1967, Dealer Choice 50-1930, Edgewater 150610, ESF 114-290, Foley/PLP 114-290, Green Line 34161, Green Line 34370, Green Meadow UBOB5, Green Meadow UEM2, Green Meadow UFE201, J. Thomas BO-009, J. Thomas BO-16, Laser L1517, Laser 91051, Landscaper Express 2215, Landscaper Express 3231716, Landscaper Pro 3231716, Landscaper Pro UBOB5, Landscaper Pro 2215, Landscaper Pro 91208, Mow More BC16B, Mow More EX16, Mow More FE16, NHC BC1201, Oregon 93-005, Oregon 91-183, Oregon 91-480, Oregon 91-208, Prime Line 7-04564, Quality 120191, Ratio Parts 31-016, Rotary 2172, Rotary 11493, Rotary 1009, Rotary 6500, Rotary 10718, Rotary 9487, Rotary 10172, Rotary 9967, Stens 315-868, Sunbelt SB-90916, Sunbelt SB-2172, Sunbelt BC1201, Sunbelt SB-1009, Sunbelt B1BC1201, Sunbelt B1PD5005, Sunbelt B1EM1805, Sunbelt B1BC1200, Sunbelt B1PD5008, Sunbelt B1HV1016Ariens Requires 2 for 32" deck; 3 for 48" deck; Bad Boy Requires 2 for 32" deck; 3 for 48" deck; Bobcat Requires 2 for 32" deck; 3 for 48" deck; Exmark Requires 2 for 32" deck; 3 for 48" deck; Gravely Requires 2 for 32" deck; 3 for 48" deck; Kees Requires 2 for 32" deck; 3 for 48" deck; Snapper Requires 2 for 32" deck; 3 for 48" deck; Snapper Pro Requires 2 for 32" deck; 3 for 48" deck; Toro Requires 2 for 32" deck; 3 for 48" deckLength: 16 1/4 ", Center Hole: 5/8 ", Outer Hole: 1/4 ", Center To Center: 1 5/8 ", Width: 2 1/2 ", Heavy-duty, Thickness: .250 " U4