Metal dome (also known as pot slices or metal dome, snap dome), (because its switch is like an upside-down pot, so commonly known as pot slices, or 'pot pieces'), the English metal dome, made of stainless steel, is an important part of the switch, with the help of the wire slap on, between the user and the product to play a high-quality switch role. At the same time, the use of metal dome stable rebound force (automatic reset after press), its characteristics of long life, to provide users with high-quality tactile feedback.

Metal dome is used in thin materials (usually 0.05mm to 0.15mm) stainless steel strip (steel grade is usually used 301 or 304), metal dome is an important part of the switch. Metal dome is mainly used in film switches, contact switches, PCB boards, FPC boards, medical devices and other products.