Upgraded Material: Made of sturdy, wearresistant ABS plastic that is welltested by the manufacturer. ABS plastic is designed for constant exposure to the elements, resisting wear, UV rays, extreme temperatures, and deformation for long service life. Practical Design: Features an insidethread cuff that provides a strong grip when screwed onto the hose, ensuring a secure connection and reducing air leaks during cleaning. This helps you use pool cleaning tools more confidently and safely. Wide Compatibility: The cuff's internal thread is universal for 11/2 inch spiral wound pool vacuum hoses, while the smooth end fits standard vacuum hose ports. It can and broken hose ends and is suitable for most pool vacuum hoses, providing convenient replacement. Easy Installation: No tools required. Install by twisting the cuff onto the exposed end of a spiralwound vacuum hose until tightly secured; the other end connects to a vacuum head or a vacuum skimmer inlet hole. Use Scenarios: damaged hose ends to restore suction when a hose end cracks; upgrade an old or loose hose connection to prevent air leaks; adapt hoses to different pool cleaning heads or skimmer inlets.