General description Brand new and made from high-quality materials, these front wheel caster spare parts are durable and perfectly matched to Roborock S8 Plus, S8 Pro Ultra, and G20 robot vacuums. Technical specifications Color: as shown Material: plastic Measurement allowed error: +/- 1-3 cm Package Contents 4 x Universal Wheel for Sweeper Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product.