The Stihl 62357102111 AutoCut C 25-2 Mowing Head is an original Stihl double line mowing head designed for efficient mowing and thinning tasks. This head automatically extends the mowing lines when tapped on the ground, ensuring continuous operation. It is compatible with various Stihl trimmers and brushcutters, including models such as the FS 55 R, FS 56 RC-E, FS 70 RC-E, FS 91, FS 111, FS 131, FSA 90 R, FSA 130 R, FSA 135 R, FR 131 T, and FR 460 TC-EM. It features an M10 x 1.0 LH mounting and is designed for 2.4 mm (0.095 inch) line diameter.