QualityParts From Oregon That you can depend on. Center Hole: 11/16": Blade's superior flatness and straightness gives a clean, manicured cut; Made from Boron Steel; Stays sharp and durable; Major blade replacement for John Deere Models: L120, L130,1742HS, 1948GV, 1948HV, 2148HV; Requires 3 blades for 48" cut; Oregon Equipment Parts 191-108 BLADE,JOHN DEERE 17 IN