Designed specifically for your Optimow Robotic Lawn Mower, the Optimow 9 Piece Replacement Blades Set includes three sets of replacement blades, totaling nine durable stainless steel blades. With two-sided cutting edges, these blades ensure a precise and clean cut for your lawn. Worried about installation? Don't be! We've got you covered with replacement screws included in the pack, making the blade replacement process a breeze. Keep your lawn looking its best all season long with the Optimum Robotic Lawn Mower Replacement Blade Set!