JUYO VONSAN&reg; Metal Button USB Foot Control Keyboard Action Switch Pedal HID Durable Made of Plastic and Metal,Three of the pedals are made of Metal,it more duable. USB foot switch can bear weight of more than 100kg. Solidly-built and durable enough for use. Simulate any key on keyboard, combination key, mouse and character string. Easy to use and convenient. Widely used in various intelligent control game, instrument control, factory testing, piano keyboard test, hospital image scanning, etc.