【Applicable Models】: Suitable for 95% of straight shaft trimmers, brush cutters and edgers with M10 x 1.25 left-hand thread. Rotation: counterclockwise. Universal double-thread head, double-thread cutting.【High Quality】: Made of high-quality aluminum nuts (M10x1.25) and nylon threads. The universal cord head is equipped with a durable lawn mower cord that is not easy to break and can be used for a long time.【Easy to Install】: Our replacement trimmer heads are easy to install and replace. Pre-assembled with 2m/6.6ft long and 2.4mm/0.09in diameter wire.【Package Contents】: You will receive 1 or 2 pieces of lawn trimmer heads suitable for M10 x 1.25.【Note】: This trimmer head does not have extra adapters for other sizes (M8/M12). It is just a trimmer head that fits M10 x 1.25, perfect for garden or agriculture.