This swimming pool cuff provides a simple method for connecting two hoses for extra length. Backwashing your pool filter is essential for keeping your water clear, so this hose coupling is essential especially during pool opening. This type of accessory is very much crucial for a well-maintained pool. Details: White 1.75" x 3.5" cuff size Threaded interior for secure attachment to the hose Great for connecting vacuum hoses or filter pump connection hoses together Heavy duty plastic For use with a 1.25" vacuum hose Recommended for outdoor use