Package includes two metal odorproof floor drain cores, specifically designed as 2inch drain plug replacements for standard residential drains. Each core features a builtin seal and a compact size that fits most household drain openings without requiring major modifications to existing plumbing. Key Benefits: Prevents unwanted odors, sewage, and water backflow with an integrated oneway valve. Automatically opens for smooth drainage, then seals tightly when not in use to create a reliable barrier. Easy to install with no tools or plumbing expertise required. Doubles as a temporary shower or bath drain stopper for water retention when needed. Features and Specifications: Size: 2inch diameter, compatible with most standard residential floor drains. Material: Durable metal core with flexible silicone sealing edges for a secure fit. Function: Odorblocking, backflow prevention, and temporary water stoppage. Installation: Simply remove any existing drain core and insert the core into the drain opening. Practical Applications: 1. Bathroom floor drains – stops unpleasant sewer odors while allowing efficient water drainage. 2. Kitchen or laundry room drains – prevents backflow and odor intrusion from main plumbing lines. 3. Showers and bathtubs – acts as a water stopper when pressed down, creating a temporary seal for filling or soaking. Performance: The floor drain core's oneway valve ensures hygiene by blocking gases and liquids from reversing flow into the living space, while the silicone seal conforms to drain edges to eliminate leakage when used as a stopper. Its sturdy metal construction provides longlasting performance under regular household use. This twopiece set delivers a simple, effective solution for maintaining clean, odor drains in homes, and offers the added benefit of temporary water sealing for baths and showers without the need for extra accessories.