Made of high quality nylon, the size is 14 x 6.5 cm, which is more durable, better quality and less likely to be damaged. Replacement trimmer head for STIHL FS55 FS56 FS55RT FS56R FS70 FS70R FS74 FS76 FS80 FS85 FS80R FS85R FS90 FS94 FS90R FS94R FS100RX FS110 2.4 mm x 2.5 m trimmer line for lawn edges, around trees, between shrubs, borders, walls and fences. During operation, the cutting line will automatically adjust after tapping the trimmer head. Package includes: 1 x replacement trimmer head for Stihl AutoCut C26-2 (left handle socket M10 x 1 mm) When using this product, please wear protective glasses and long pants to avoid injury caused by spilled cables. Note: The data are all measured manually, please allow 1-3 cm error, due to differences in light and display, there may be some color differences, please refer to the actual item received.