Oregon 396-771 PK3 Gator G6 Blades - 21-5/8" Pack of 3 Replaces: John Deere M143504, M158112, M152727; Sunbelt: B1PD1068, B1PD5068 Length:21-5/8"; Width: 3.00"; Thickness: 0.250"; Center hole size: 13/16"; Air Lift: 1"