Quantity: 60 plastic cutter blades, enough for your use and replacement. Size: plastic blade is 85mm long, 20mm wide, hole diameter is 11 .5mm, hole diameter is 7.3mm. High Quality Material: The tip is made of high quality ABS material, which is firm, stable and reliable. EASY TO USE: These plastic replacement blades are easy to install and use. With this replacement blade, you can select and mow your lawn easily. Wide adaptability: 60 brush cutter accessories compatible with FRT18A FRT18A1 article 46155 FRT20A1, IART 2520 & IAT 20-1M… (Compatibility only for reference. Please compare the hole size with the original one before purchase.