- Improves pool cleaning efficiency by replacing worn vacuum plate and flat adapter with this dedicated replacement set, restoring strong suction and faster debris removal. - Wide compatibility with models 8939, 8939G, 8939A, 8939AG, 8940, 8940G and many pool skimmers, so you can use it across different setups. - Easy connection: vacuum arc accepts hoses with diameters 2.5–35.6 cm and 2.5–30.5 cm, ensuring a secure, hassle free fit to your existing equipment. - Durable construction: made from sturdy pool safe material designed to withstand regular use and chemical exposure. - Use scenarios: - After upgrading your pool cleaning system, install to restore performance without replacing the entire unit. - Use across multiple pools with different skimmer models during seasonal maintenance. - Swap hoses or adaptors easily when you add a new hose size or different cleaning tools.