Heavy duty 16-1/4" mower blade replaces OEM#'s for: Ariens/Gravely: 00273000, 04919100, 4919100; Bad Boy: 038-3000-00, 038-4820-00, 038-5350-00; Bobcat/Lesco/Snapper: 013418, 03239, 100340, 101366, 112111-01, 11211101, 13418, 1-7036, 17036, 272254301, 32061, 32061A, 483011, 483046, 5020843A, 5020843ASM, 5101986BMYP, 7017036, 7017036YP, 7017036BMYP, 7077378, 7-6675, 76675, 7-7378, 77378, 7-7386, 77386, WM132061, WMTA32061; Exmark/Toro: 1-100340, 1-323515, 1323515, 1-403026, 1403026, 1-403059, 1403059, 1-403086,1403086, 1-403148, 1403148, 103-2507, 103-2527, 103-6581-S, 1036581S, 103-6583-S, 1036583S, 103-6738-S, 1036738S, 1520843, 3011, 323515, 403026, 403059, 403148; Ferris/Simplicity: 1520843, 20843, 5020843, 5101986, 17036, 77378; Husqvarna: 14671, 17036, 483046, 539100340, 539-10-03-40, 539118420, 76675; Rotary# 2172; similar to Stens 310-045 and Oregon 93-005. Refer to your manual to match by OEM. Order (3) blades for 48" cut, (2) blades for 32" cut. This blade also sold previously as BC16.