This set with 4 Spare Blades and 4 fastening screws is ready to go when the blades of the Milagrow Lawn Robots Robo Tiger 2.0 & Robo Tiger 1.0 need to be exchanged in order to cut razor-sharp and precisely again. The Milagrow Lawn Robots works with 2 blades – with this set, you can change blades 2 times. Blades Lawn Robots RoboTiger 1.0&2.0 Learn More