Easy to use - Pump hose adapters are ideal for connecting pool hoses, connecting threaded hoses to snap-on hoses, and connecting 1.25 and 1.5 Type B hoses to swimming pools. Combination - When upgrading from a 1000 GPH pump or upgrading a smaller pump to a 1500 GPH or larger pump, 2 unit adapters are usually required to connect the larger adapter to the pump. Applicable - The threaded pool hose adapter is suitable for pumps and seawater systems. WHAT YOU WILL RECEIVE - You will receive 4 pool hose adapters with openings approximately 40mm in diameter, sturdy and durable to ensure correct and safe use of the pool. If you have larger needs for filtration systems and pumps, these pool adapters are the permanent connection solution?????. These Type B adapters are securely screwed onto the black rubber grommets and provide external threading for large coiled hoses. Features - Type B long thread hose adapter for 1.25 to 1.5 seawater pumps and systems. - For drip-free installations, we recommend the use of hose clamps. - Ideal grip for continuous use in pool water. - Quick installation and durable, easy to use, easy to carry, strong and corrosion resistant. Specifications Hardware?: Plastic Adapter weight?: 35?g (single) Package Contents Pool Adapter 4?*