High Quality Material The trimmer knife is made of high quality ABS material. It's sturdy and solid. This trimmer knife helps make cutting more precise and provides safety when trimming, is very sturdy and strong. Easy to Install These trimming knives are easy to install and use. This allows garden mowers to easily cut and trim your garden plants. Good Performance The blade has good stability, safety and reliability. Can reach all weeds around trees without felling or injuring trees.High Quality This mower blade helps improve cutting precision while providing the most advanced safety.Suitable For The cutting blades are suitable for FRT18A FRT18A1 Art. 46155 FRT20A1. With these mower blades you can easily collect and mow the lawn.