The product includes 2 rubber plugs and 2 white threaded plugs for pool return pipes. The expandable rubber plugs not only assist with backwash and cleaning of water lines, but also prevent water from entering the pipes by backflowing them during winter. They also help test pool pressure and prevent water flow during equipment maintenance. The threaded plugs for pool return pipes protect the pipes from cracking during winter. The pool winter plugs are made of high-quality rubber, which is reusable, robust, and safe. Their high-quality metal makes them less prone to breaking and rusting. The threaded pool return plugs are made of high-quality material that can withstand very low temperatures without slipping or shrinking, and you can use these plugs outdoors for a long time. Easy to use: Simply screw the rubber pool plug onto the return and drainage ports after the water has been drained to prevent water from entering the pipe. Winter pool plugs are widely available and can be applied to a variety of inlet and outlet plug storage units; threaded pool plugs are suitable for a variety of inlets and outlets for above-ground pools and swimming pools. Suitable for indoor and outdoor pools, kitchens, etc. Color: White + Black Material: Plastic + Rubber Size: 51mm Package Contents: 2 x Pool Winter Plugs 2 x Pool Return Winter Plugs Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the actual product. Please allow 1-3 cm error.