Set of Replacement 3-In-1's Gator Mower Blades for John Deere 42" Models 102 115 125 135, Blades GX22151, GY20850, AM137333 John Deere 3-In-1 Replacement Gator Blades Mows faster at higher speeds than traditional mulching blades. Improved side discharge capabilities. Thicker blades provide additional strength and longer wear. Delivers excellent bagging performance when you need to bag