General description The AlwaysH Autocut C3-2 Head is a replacement trimmer head designed for the STIHL FSA 57 and FSE 52 models. It comes with a pre-installed trimmer line that supports up to 2mm in diameter, making it ideal for efficient garden mowing. Technical specifications OEM parts number: 4009 710 2106 Compatible models: STIHL FSA 57 (from 2020, serial number above 522544906), FSE 52 (from 2020) Trimmer line diameter: up to 2mm Usage The Autocut C3-2 trimmer head allows for simple operation. The trimmer line can be adjusted automatically by pressing the line head, enabling quick and efficient mowing. The line can also be replaced from the outside without the need for disassembly. Other information Durable two-line spool suitable for lawn environments Manual measurements may allow for an error of 1-3 cm Color differences may occur due to lighting and display variations