30 spare blades - For models such as: S300 S500i M500 M700 M1000 M1000i M1200i L1500 L1500i L2000i ID B M800i M900 S500i S Basic S450i S700i. WR130E M WR141E M WR142E M WR 143E M WR153E L WR155E etc. Benefits: 100% compatible with original blades. Quality stainless steel Titanium upper and coating for excellent abrasion resistance. rust, acid and alkali. Put the new Dacromet screws. Additional innovative coating for long life. Sharp enough for a perfect and efficient lawn cut Easy and quick to clean ascend. Space saving. Small packing box Features: Replacement blade material: stainless steel. Coating: titanium. Quantity : 30 spare blades, 30 Dacromet screws. Thickness: 0.04 inch/piece. Screw length: 0.51 inches. Dimensions of the replacement blade for the automation: 1.38 x 0.67 x 0.004 inches. Contents: 30 spare blades. 30 Dacromet screws. Note: 1. Replacement blades are extremely sharp, please take this into account when assembling. Always wear gloves and, if necessary, protective goggles. 2. Please keep titanium knives away from children and pets due to their sharpness.