General description The 16Pcs Series Grass Trimmer Line is a multifunctional autofeed replacement spool designed for various BLACK+ string trimmer models. This product simplifies the process of replacing spools, making it convenient for users. Technical specifications Length: 9.1 m Diameter: 0.065 inch Material: ABS and polyamide nylon Color: Black + White Package Contents: 16 x AF-100-3ZP Replacement Trimmer Spools Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible models: GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7200, ST7700, ST7701, ST8600, ST9000, CST1000, CST1100, CST1200, CST2000, MTETC220, NST1024, NST1118, NST1810, NST2018, NST2118, LST120, LST136, LST140, LST201, LST220, LST300, LST400, LST420, LST522, LST1018, LSTE523, LSTE525, BESTA510, BESTA512, BESTE620 Installation Tool-free installation: Snaps on and off the mower for easy use Usage Utilizes centrifugal force and aerodynamics to reduce drag and achieve a smooth cut The auto