Quality & Durable materials: The cordless strimmer blade is made of premium ABS material, durable, flexible, odorless, not easy to break and good stability, can be used for a long time. A must-have accessory for garden mowers. 12 mm 7 mm." Versatile Trimmer Blades: You will get 20 pieces high-quality, efficient and safe blades. Our plastic grass trimmer blades are duitable for most cordless mower, such as Einhell GC-CT 18/24 Li, Bosch ART23 LI Accutrim Easytrim Accu, Qualcast Mow N Trim Easi-Lite 28, 30, etc.(Please confirm the size before purchase) Precise Cutting & Easy Weeding: Our lawn mower cutting blades are designed with sharp edges, which can effectively remove weeds and keep your garden tidy. The plastic strimmer replacement blade will provide higher safety and efficiency. Easy to Use & Store: This plastic grass trimmer blades are easy to install and easy to use, just place it on the lawn mower without any tools. Comes with a plastic box for easy storage, you can also put it in the board storage. First Choice for Trimmer Blade Replace: Best value pack includes 20 pcs plastic grass trimmer blades, sufficient quantity and premium quality are enough to meet your replacement needs. Please change the plastic trimmer blade regularly to maintain the high performance of the mower.