The STIHL 40017132100 AutoCut 25-2 mowing head is an authentic OEM replacement part designed for efficient grass trimming and thinning work. This robust two-line mowing head automatically extends the cutting line when tapped against the ground, ensuring continuous operation. It is suitable for a range of STIHL grass trimmers and brushcutters, providing reliable performance for both domestic and professional use. The head features easy line reloading without needing to open the casing, enhancing user convenience and productivity.