Item Name: Emergency Stop Push Switch Push to stop and lock, twist to reset, 2 screw terminals, 1 NC contact type, mushroom emergency stop push button switch. The switches are structured compactly and operated quickly and gently. Can be widely used to control the electromagnetic , contactor, relay and other automatic control electric circuits. Action Type: Latching Contact Type: 1 NC Ith: 10A;Ui: 600V Uimp: 6KV AC 15: 240V 3A Button Diameter: 40mm/1.6 inch Mount Hole Diameter: 2.2cm / 0.87 inch(7/8 inch) Fit Panel Thickness(Adjustable): Max 8.5mm / 0.3 inch Size: 39 x 29 x 73MM/ 1.5 inch x 1.1 inch x 2.9 inch(L x W x H) Material: Plastic and Metal Main Color: Red, Black Net Weight: 392g Package Content: 4 x Emergency Stop Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.