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