General description 4PCS Robot Vacuums Front Wheel Caster Spare Part Replacement is made from new, high-quality materials, ensuring durability and a perfect fit for your equipment. Technical specifications Color: As shown Material: Plastic Package Contents: 4 x Sweeping machine universal wheel Measurement allowed error: +/- 1-3 cm Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.