Optimized for A1: Specifically designed to fit the A1 robotic lawn mower, ensuring a perfect compatibility and performance enhancement. Rubber Material: Crafted from rubber, these anti-skid wheels offer superior durability and long-lasting use in all garden conditions. Enhanced Traction: The anti-skid feature provides excellent traction, allowing your robotic lawn mower to navigate smoothly across wet grass and uneven surfaces. Easy Installation: These wheels are easy to install, making it simple to upgrade your lawn mower's performance with minimal effort. Essential Accessory: Ideal for maintaining your garden's beauty by ensuring your robotic lawn mower operates efficiently without slipping or stuck. *Product Name:Lawn Mowing Robot Anti Pulley Compatible with for A1 Robotic Lawnmower *Material:rubber *Size:110*40mm *Color:Black *Number of Pieces:4 Color: Black Material: Rubber Package Contents: 4*Anti Pulley Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.