Easy installation: simply insert the frost plug into the pool pipe for quick setup. Compatible with pool winter plugs and pool pump fittings. Multipurpose and versatile: suitable for pools, water tanks, and pipes; ideal as inground pool plugs and pool accessories for winter. Durable plastic construction: made from durable plastic for reliable performance in pool fittings and pool filter drain plug applications. Wide compatibility: suitable for pools, ponds, and water pipes; can be used as a pool vacuum hose adapter and pool drain plug. Use scenarios Winter pool care: insert into the pool pipe to seal the line during freezing weather for inground pools. Water system maintenance: use in water tanks or irrigation pipes to cap or seal unused lines. Pool maintenance tasks: connect as a pool vacuum hose adapter or use as a drain plug during filtration or cleaning.