Improve traction - with our studs for Worx robotic lawnmowers, there will be no more holes in the lawn, it is easier to drive in the mountains and it does not slip on rainy days. 205 mm in diameter and 2 mm in thickness. Stainless steel material - Our Worx robotic lawnmower studs are made of 304 stainless steel and polished in an extra production step to achieve a perfect look. All edges of the Worx traction enhancers are deburred. Premium Phillips screws - The 4 x 20 mm stainless steel Phillips screws ensure easy mounting of the trimming tips, and the countersunk screw holes allow for a tight fit for the screws, so that the lawnmower wheels do not get stuck by the screw heads. Compatible with all S and M models (not for 2021 models) S300 [WR130E], M500 [WR141E], M700 [WR142E], M1000 [WR143E], S450i [WR101 SI], S4. 50i [WR102SI], S450i [WR106SI], S700i [WR101 SI], M800i [WR111MI], M800i [WG757E], M900 [WG758E], M1000i [WG796E.1], M50. 0 2.0. [WR165E], M700 2.0 [WR167E] Quality Service - Your satisfaction is our goal. We offer 100% after-sales service for our robotic lawnmower blades. Product Description Spikes for Worx S&M models The high-quality stainless steel spikes provide much better traction for your robotic lawnmower. On wet surfaces, on steep terrain or in difficult terrain, the robotic lawnmower can get stuck and dig unsightly holes in the lawn. With our spikes, this is a thing of the past. Stainless steel material and high-quality Phillips screws Our Worx robotic lawnmower spikes are made of stainless steel and polished in an extra production step to achieve a perfect look. All edges of the Worx traction enhancers are deburred. 4 x 20 stainless Phillips screws can ensure easy installation of the robotic lawnmower spikes, and the countersunk screw holes allow the screws to sit perfectly so that the wheels of the robotic lawnmower are not pinched by the screw heads. ASSEMBLY INSTRUCTIONS Mounted on the outside of the tire Tools needed: Cross drill 1.5 mm drill bit (optional) Mounting tips Place your Worx Landorid vertically so that the left or right tire is facing up. Place the studs on the wheel and center them. It is now possible to pre-drill holes with a 1.5 mm drill bit. Then use the stainless steel screws provided to attach the studs to the tire.