1Applicable Models: This lawnmower blade set is suitable for Worx Landroid robotic lawnmower, use these blades to make your lawnmower work efficiently. 2Double Sided Blade: This resistance blade is a double side blade, when one side comes off, flip it for more use, it will last longer. 3Fine and Sharp: This blade is crafted with fine machining, its fine and sharp cutting surface makes perfect cuts possible, sharp and practical. 4Widely Applicable: These replacement blades are suitable for all types of grass, for garden, backyard, lawn grass, for a wide range of uses. 5Simple Installation: It is very easy to replace the blade, 2 pieces in one, just remove the screws and replace with new ones, convenient to use. Item Type: Lawn Mower Blade Set Material: Stainless Steel, Titanium Gross Weight: 202g / 7.1oz Blade Size: Approx.3.5 x 2cm / 1.4 x 0.8in Round Hole: Approx.0.7cm / 0.3in Screw Aperture: Approx.0.3cm / 0.1in Suitable Models: The blade applies for Worx Landroid S300 S500i M500 M700 M1000i M1200i L1500 L1500i L2000 L2000i ID B M800i M900 S50. 0i S Basic SS. 450I S700i, S WR130E M WR141E M WR142E M WR 143E M WR153E L WR155E and so on. 30 x Blade 60 x Screw