High Reliability & Exquisite Craftsmanship] Each set includes 4 guide wheels and 2 pulley gears made of premium ABS material. Sturdy, reliable, and abrasion-resistant for long-lasting use. [Sturdy Material] Made of premium ABS material, these pool cleaner guide wheels are built to last. They are not easy to damage and provide reliable performance. [Easy Installation & Compact Design] Easily replace old and damaged parts. These guide wheels with pulley gears will not take up extra space and provide convenient use. [Practical Pool Accessory] Portable and lightweight design with high climbing ability. Suitable for swimming pools, spa rooms, etc. [Replacement Pool Cleaner Guide Wheels] Ensure your Dolphin pool cleaner runs smoothly with these 4 replacement wheels and 2 pulley gears. easy to install without the need for complicated tools.