Suitable for FS130 FS120 FS110 FS100 FS100R FS460 FS480 FS83 FS83T FS85 FS85R FS85T FS85RX FR85T FR85 FS87 FS87R FS90 FS90R trimmer Replaces OEM for 4137 640' with gear head x10 0 Safe transport You are welcome to contact us before or after your purchase contact us. Our responsible customer service is hot and always there for you.