13/32" Outer Holes, 11/16" Center Hole 21-1/2" Long, 2-1/2" Wide, .156 Thick Replaces Part Number: Gx20249_X2, Gx20433_X2 This is a 3 in 1 Mulch Blade OEM Numbers Are Provided for Reference Only. Please Verify Fit Prior To Ordering. Two New Aftermarket Replacement Steel BladesFits John Deere Riding Mower 42" Models:L100, L105, L107, L108, L110, L111, L118Tech Info:C to C 3-3/4"Center Hole 11/16"Length 21-1/2"Outer Hole 13/32"Thickness .156Width 2-1/2"25-40% harder than standard lawn mower bladesReplaces Part Number(s):Fits John Deere:GX20249, GX20433, GY20567