Set Of 3 New Toothed Mulch Mower Blade This Is An Aftermarket Replacement Part Made To Meet Or Exceed OEM Specifications. OEM Numbers Are Provided for Reference Only. Please Verify Fit Prior To Ordering. Please Note: Some Listings Use Stock Images for Reference and May Differ from the Actual Product. This Aftermarket Part Is Made to Meet or Exceed Manufacturer (OEM) Specifications. Qty 3: New Aftermarket Toothed Mower Blade Tech Info:  -Quantity: (3)  -Center Hole: 15/16"  -Length: 20-1/2"  -Thickness: 0.204  -Width: 2-1/2"  -Requires (3) Blades for 60" cut. Made to Fit Exmark:  Lawn Mower Models: Lazer HP, CT, Phazer, Quest, SP, Pioneer  Model Breaks: * ALL SN 600,000 and below  Replaces Part Number(s): 103-6398, 103-6398-S, 1165174S, 103-6393, 116-5174, 116-5174-S  Lawn Mower Models: Lazer Z AS, ASX, XP, XS, E, S, X, D, Front Runner, Turf Ranger and Vantage  Model Breaks: * ALL SN 540,000 and higher  Replaces Part Number(s): 103-6398, 103-6398-S, 1165174S, 103-6393, 116-5174, 116-5174-S