metal snap domes are momentary switch contacts that, when used in conjunction with membrane switch or printed circuit board , Many different shapes and actuation forces are available in order to fit your specific application.  
We produce the following product :Four-legged domes,Star domes ,Triangle domes ,Round domes  ,Oblong domes ,etc.And the customer can choose model with wing or with feet. The dome  diameter size from 2 mm to 20 mm,force from 80g to 800g,the product material includes: stainless steel, gold-plated, silver-plated and nickel-plated . Customers can choose special material they need. All our products are Rohs Certification.