Specification: Features: 1. The switch button cover for food waste disposer is constructed from 304 stainless steel, while the thread plug is made of durable ABS plastic for long-term use. 2. No tools are required for installation of the strainers or stopper. Easy to clean by removing and washing with soapy water. 3. Can be mounted on the countertop beside the sink or installed in an existing hole on the sink ledge. 4. Suitable for use with food waste disposers, whirlpool tubs, swimming pool pumps, outdoor equipment, and automotive applications. 5. Note: Please double-check the diameter size before ordering. Notice: Actual color may vary slightly from the image due to differences in monitor displays and lighting conditions. A 1-3 cm measurement deviation may occur due to manual measuring. Material: 304 Stainless Steel, ABS Size: As shown in the picture Color/Style: As shown in the picture Package List: Option 1: 1 x Air Switch Option 2: 1 x Air Switch, 1 x Hose