Features Better control: can be used for remote control of AC contactors, electromagnetic starters, relays, etc., very convenient. Great Material The switch housing is made of high quality ABS and PC materials, so it is waterproof and durable for long time use. Practical Applications: allows for application on ships, textiles, pressure equipment, automation, cranes, instruments and more. 2 Hole Design There are 2 holes on the control station box, which perfectly match with the push button for easier operation. EASY INSTALLATION With light weight and compact size, the control housing allows for convenient installation and work. Specification: Item Type: Push Button Panel Material: ABS, PC Total product size: approx. 130 x 71 x 67 mm / 5.12 x 2.8 x 2.64 inches. Centre hole opening: approx. 22.5 mm / 0.89 inches, 2 pieces. Side hole opening: approx. 21.8 mm / 0.86 inches, 2 pieces. Bottom Hole Diameter: Approx. 19 mm / 0.75 inches, 2 pieces. Mounting hole opening: approx. 4.8 mm / 0.19 inches, 4 pieces. Package list: 2 x push button box cover. 2 x push button box base. 8 x screws. Small note: Adjust the appropriate size before installation and use. Package List 2 x Push Button Box Cover 2 x Push Button Box Base 8 x Screw