Alternate Part Numbers: Autocut C5-2, 4006 710 2103, 4006 7102106 C5-2 weeder head stem size includes 8mm x 1.25 LHF for use with 2.0mm pipeline Applicable models: Stihl FS38, FS40 (2008 version), FS45, FS46, FS50, FSE60, FSE71, FSE81 C5-2 trimming head is suitable for equipment types: lawn mowers, string trimmers Double wire is used for cutting and thinning. Nylon wire automatically adjusts by tapping the cutting head onto the ground, making it easy to install and use. color:Black Material:plastic Package Contents: 1 x Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.