In 1973 the Pearl Crystal Beat's stunning combination of visual appeal and powerful sonic attack sparked a revolution in percussion with first seamless clear Acrylic drum shell. Today's Crystal Beat increases shell thickness to 7.5mm for more flexible less brittle play to deliver increased body and tone than ever before. Bringing back the tonal bark of Pearl's Rocket Toms Crystal Beat's single-headed 6" toms are available in four depths from 12" to 21" at a special price..