1. TOTAL SIZE (APPROX.) -- 85mm, Big diameter=1.5mm, small=7.3mm, for FRT18A FRT18A1 Art. 46155 FRT20A1 String Trimmer. (Compatibility is for reference only. PleaseîPlease compare the hole size with the original one before purchasing!) 2. QUANTITY -- 100pcs replacement blades, enough to use, for florabest trimmer, perfect replacement for the original blades. 3. MATERIAU -- The replacement blade is made of high-quality ABS plastic, very sturdy and solid, no need to worry about rust. 4. GOOD PERFORMANCE -- The blade has good stability, safety and reliability. Can reach all the weeds around the trees without felling or hurting the trees. 5. EASYHASINSTALL -- These trimming knives are easy to install and use. This makes it easy to trim and cut your garden plants. Features: 1. Plastic trimmer blade, high quality, durable. 2. Good workmanship, it is a perfect substitute for trimmers and lawn mower blades. 3. The plastic lawn mower blade helps eliminate all the unnecessary clutter, making