There are many unpitched metallic instruments used throughout the orchestral percussion section. Here are some examples and their playing techniques.
Unpitched Metal (1)
Agogo Bells and other rare small, hand-held metallic instrument are all demonstrated. Cymbals are a majopr part of this section, suspended cymbals come in a large variety of types. Their sizes usually vary from 14" to 24". The larger the cymbal, the deeper and darker the sound. The weight of the cymbal can greatly effect the sound it produces. A light or thin cymbal will respond quickly where as heavier cymbals will produce bigger, larger sounds and resonate for longer. Beaters: Soft or Medium Beaters (many have wound yarn heads), wire or Bamboo brushes.
Unpitched Metal (2)
The main cymbal Varieties are...Chinese Cymbal - Has upturned edges and has a very explosive attack. Sizzle Cymbal - Sizzles because of rivets in the rim. These rivets vibrate in tandem with the whole cymbal. Splash Cymbals - are between 6" and 12" and therefore relatively small. They are played for fast, 'splashy' accents of short duration.
Photograph courtesy of Bell Percussion