The Worx replacement blades WA0176 come in a convenient pack of 12 and are compatible with all Landroid models. Changing them is quick and easy. The mower blades are razor-sharp on two edges, ensuring a perfect cut in both directions. Turn off the Landroid, wear protective gloves, replace all blades, and always use new screws to ensure blade stability and balance the blade disc. Each blade lasts up to 2 months with daily mowing. Dimensions: 1 mm x 4.0 cm x 2.0 cm.