General description This high-quality replacement brush cutter head is designed to fit a variety of Stihl models, providing efficient trimming and thinning capabilities. It features a special double-line design that enhances performance. Technical specifications Replacement tip numbers: 4002 710 2137 / 4002 710 2169 Diameter: approximately 14 cm Bottom threaded hole size: 10 x 1.0 mm Usage Compatible with Stihl models: FS44, FS55, FS56, FS65-4, FS70, FS80, FS83, FS85, FS90, FS91, FS94, FS100, FS110, FS111, FS120, FS130, FS131, FS200, FS240, FS250, FS260, FS260R Best used with 2.4 mm nylon line Adjust the nylon line by placing the replacement trimmer head on the ground for easy setup