Length: 21, Width: 2-1/4, Center Hole Diameter: 5 Pt. Star, Thickness: .164
N2 Razor-X? blades are manufactured with alloy steel that increases the hardness & extends the life of the blade. Requires (2) for 42 cut AYP, Ariens & Husqvarna. Fits Husqvarna lawn tractor & Consumer Z models YTH1542XP, YTH1542XPG, LTH1342 & LTH1342A. Heavy duty version available in #EP1020 & #212-0039. Notched Hi-lift blade. Replaces AYP #(s) 127843, 131323, 138498, 138498MS, 138971, 138971X431, 532127843, 532131323, 532138498, 532138971; Ariens #(s) 21546095; Husqvarna #(s) 532 12 78-43, 532 13 84-98, 532 13 89-71, 532 18 89-71, 578 43 19-14; Viking #(s) 6109-004-2012.