Versatile Compatibility: Designed to convert 1.25" fittings to 1.5" fittings. Connects 1.5" and 38mm pool hoses to plungers or pool connectors. Compatible with B-Series Adapter 25009. Easy to Install: This adapter kit features a user-friendly design that allows for quick and straightforward installation, with the small end with clip attaching to the 1.25" pool wall and the threaded end attaching to the 1.5" hose, just on and go.