【2 Professional Lawn Mower Replacement Heads Compatible with Stihl Autocut C26-2】: Suitable for short grass, commonly used in family gardens, large parks or farms. Perfect for lawn mowers or agricultural use. Suitable for Stihl Autocut C26-2 FS 55/56/70/94/91/111/131/240. It can help you mow a large area of lawn and make it smoother. 【Trimmer Head with Special Double Line Design】: The trimmer head adopts a special double line design for trimming and thinning. Double ropes for mowing and thinning. The nylon cable adjusts automatically by hitting the trimmer head on the ground. It works with a 2.4mm cable, making it simple to install and easy to use. 【Easy to Use】: The trimmer head is combined with a 2.4mm wire, easy to install and use. High cost performance, good quality and low price, long service life. Instructions for use: When you place the trimmer head on the ground, the nylon line will automatically adjust. 【High-quality material, practical and compact】: The strongest trimmer