1. Material: The Push Button Cover is made from pp material, which is sturdy and wear resistant, not easy to break, with an opening hole of 22mm, and ensures a long time of use. 2. Protective Function: The Emergency Stop Button Cap can effectively prevent the emergency switch from dust and accidental contact, providing comprehensive protection. 3. Installation: The dustproof Button Guard is easy and fast to install without professional tools required, and can be easily installed on the button. 4. Resistance: Switch Cover Protector is waterproof and dustproof, can be used in outdoor or wet environments, and is a safe and reliable switch cover. 5. Application: Emergency Stop Button Cap can be used for computer PC power button, desktop button at home and office. 6. Specification: - Material: Pp - Size: 4.3 cm x 3.9 cm x 1.65 cm/1.69 inch x 1.54 inch x 0.65 inch 7. Package Includes: 1xPush Button Cover Guard 8. Note: Please allow slight errors of 1-2cm/0.39-0.79inch due to manual measurement.