STIHL AutoCut EasySpool trimmer heads are easy loading cutting attachments that do not require any disassembly of the head. Made of durable and robust heavy-duty plastic, these trimmer heads are ideal for residential trimming applications. They are compatible with thick lines and feature improved line release while trimming by simply tapping the head on the ground. EasySpool allows users to reload the trimmer line easily without disassembling the head, resulting in a fast and hassle-free process. Depending on the model, AutoCut EasySpool trimmer heads are compatible with most straight or curved shaft trimmers.