Threaded pool drain plugs made of polypropylene for long service life. Designed to protect skimmers and hose openings from water ingress and freeze damage while remaining easy to install and corrosion resistant. Key benefits Winter protection: effectively blocks water seepage in skimmer and hose openings to help prevent cracking and other damage from freezing. Durable construction: made of PP resistant to corrosion and oxidation for reliable long term use. Simple installation: screw the plug into the pipe hole and tighten, no auxiliary fasteners required. Ready quantity and precise fit: set of 4 pieces to cover multiple ports or replacements, with consistent dimensions for predictable installation. Product specifications Material: polypropylene (PP) cover diameter: 54.2 mm Thread diameter: 46.8 mm Height: 32 mm Quantity: 4 pieces included Compatibility and performance Intended for pool skimmer and hose openings or plumbing ports that match the listed thread diameter and cover size. Provides a secure threaded seal to reduce water seepage and limit exposure to freeze related damage. Corrosion resistant construction helps maintain function in outdoor and pool environments. Typical applications Seasonal winterizing of residential pools to protect skimmers and lines from freeze damage. Sealing plumbing openings during pool maintenance or when draining equipment for storage. Temporary closure of hose or pipe ports during , transport, or system testing. Installation notes Thread the plug into the pipe hole and tighten by hand until snug. Avoid excessive force to prevent damage to threads. as needed if threads show wear. Package includes 4 threaded drain plugs with the dimensions listed above.