Oregon 21-580 Round Gatorline .080 5Lb SpoolWell suited for all users, our Gatorline Trimmer Line features long lasting, high quality materials and fits most standard trimmer heads. . 08" diameter trimmer line is an ideal fit for many string trimmer models, including but not limited to: Stihl FS 45 and FS 40 C, DeWalt DCST920P1 and DCST970X1, Ryobi RY40220 and Greenworks 21362. Gatorline is compatible with most standard trimmer heads including fixed line, semi and automatic bump feed heads.