For Grass Cutter Parts Gas String Trimmer Petrol/Electric Brushcutter Strimmer, Adjustable Support Wheels Liberate the body?Holding tools for a long time can cause sore hands and shoulder pains. Using this pulley can easily solve these problems;This item does not fit a curved pole. Flexible design: The height of the support wheel can be adjusted according to your height, can be raised or lowered, making your weeding work easier. General Accessories?Perfectly suitable for most backpack mowers on the market. Suitable for 26mm and 28mm shaft tubes. Height adjustable?According to the user's height and the needs of the use scene, the height of the support wheel can be adjusted at any time. After-sales service? If you have any quality problems, please contact us.