Feature: 100% brand new and high quality. Ideal for control of pneumatic switches for products such as garbage processor, massage bathtub, children& 039;s toys and so on. Specification: Name: Air switch button Main material: ABS engineering plastics+Stainless steel 304 spring+Silica gel gasket Product surface: bright chrome plating Color: white/black, black 3 Sizes to choose: installation hole 28mm: upper diameter: 38mm, height: 64mm(white/black) installation hole 32mm: upper diameter: 46mm, height: 64mm(white/black) installation hole 34mm: upper diameter: 46mm, height: 64mm(black) Package included: 1PC x Air Pressure Switch Note: 1. Due to the light and screen difference, the item& 039;s color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.