Features: Ensures safety with Sphericals Mushroom Head Emergency Stop Button Switches, designs for secure emergency shutdowns to protect both operators and equipment. Featuring locking and resetting mechanism, this Switches minimizes the risk of accidental activation, while its waterproof designs ensures high performances in various environment. For industrial equipment operators, electricians, and technicians who require immediate control over machinery during emergencies. Perfectly suited for factory production lines, mechanical equipment, and automation systems where rapid emergency stop functionality. Craft from plastic, polycarbonate, and nylon, this Switches offer long time resiliences, making it addition in any workspaces. Specifications: Component: Nylon Type: As Picture Show, Two Type to Choose Size: 9.2x10.1cm/3.62x3.98inch Note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Package includes: 1pc Button Switches