Material：Button Switch Protector Use high-strength PC material, Anti ultraviolet,not easy to aging anti-corrosion, shockproof strong and durable, not easy to break, and has a longer service life. Size: Emergency Stop Push Button Switch Size 55mm*55*55mm/2.16inch*2.16inch*2.16inch.There are two mounting aperture sizes respectively is 2.2mm/30mm/0.86inch/1.18inch Applications Wide：These switch box cover protectors are very suitable for you to protect the button switch It is firmly installed on the emergency stop switch, or on the emergency stop button and other electrical appliances, and the lock must be opened to operate. It is a very practical tool for protecting the button switch. Unique Design:Transparent and visual design, the base and sides can be removed, allowing you to better lock all kinds of power switches It is a very practical tool for protecting the button switch. Push Button Switch Protector With lid The lid can be easily opened and closed. Easy to use Material：Button Switch Protector Use high-strength PC material, Anti ultraviolet,not easy to aging anti-corrosion, shockproof strong and durable, not easy to break, and has a longer service life. Size: Emergency Stop Push Button Switch Size 55mm*55*55mm/2.16inch*2.16inch*2.16inch.There are two mounting aperture sizes respectively is 2.2mm/30mm/0.86inch/1.18inch Applications Wide：These switch box cover protectors are very suitable for you to protect the button switch It is firmly installed on the emergency stop switch, or on the emergency stop button and other electrical appliances, and the lock must be opened to operate. It is a very practical tool for protecting the button switch. Unique Design:Transparent and visual design, the base and sides can be removed, allowing you to better lock all kinds of power switches It is a very practical tool for protecting the button switch. Push Button Switch Protector With lid The lid can be easily opened and closed. Easy to use