Replacement for part number 3884997-R6: Guide wheels and pulley replacement set includes 4 guide wheels and 2 pulley gears designed for compatible Dolphin pool cleaners. No special tools required for installation, allowing for easy maintenance and improved cleaning performance. High Compatibility: Fits Dolphin Prowler 820, 830, Wave 50, Wave 75, Wave 90, Wave 2X2 Gyro, Quest, Premier, Plus, C5, Advantage Plus RC, Advantage Plus Pro RC, Deluxe 3, Deluxe 4, 3001, DLX 4, Deluxe 5, HD, PROX2, DX6, M400, M500, M5, Edge, Triton, Triton Plus, Heavy Duty, and other compatible robotic pool cleaners. For model-specific questions, contact seller directly. Durable Construction: Made from high-quality materials for long-lasting performance. These components are designed to withstand regular use and help maintain optimal operation of your pool cleaning machine. Easy Installation: Simple replacement design ensures quick and hassle-free setup. The compact size allows for convenient storage and does not take up extra space. Package Includes: 4 x Guide Wheels, 2 x Pulley Gears. Guide Wheel Dimensions: Approximately 2.05 x 2.05 x 1.06 inches. Inner diameter: approximately 1.18 inches. Pulley Gear Dimensions: Approximately 2.24 x 2.24 x 1.57 inches. Color: White Material: PVC Note: Light reflection and differences in display screens may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.