Metal Edge Trimmer Blade / .490 Center HolePack Size:1Allen SE00603, Allen SE 1601, Grasscraft GC 1601, Trim-A-Lawn 13051J. Thomas 390171, NHC 207-1227, Rotary 9035, Stens 390-170Allen 418H, 421H; Grasscraft Allen Clean Cut Hover mower; Universal Stihl, Hoffco, Husky Tri-King, Weed Blaster and Weed Master trimmer headsID: .490 ", 4 1/8" L, .149" THK, Package of 3, Priced per pack, sold per pack