Industrial Grade 16mm Dia Push buttons with Normally open contacts, press to on ( Non-locking) ,housed in Nickel Chrome Plated Brass Body with Tinned Kliptite / Solder terminals mounted in Electrical grade Bakelite base, with a choice of White, Black, Blue, Red, Yellow, Green colour buttons. Electrical rating: - 3 Amps at 230V AC,Contact resistance is 2.3 .Tested by IDEMI, Mumbai.