Deluxe 50cm(20") Recording Bass Drum With Mallet Perfect TC Treated: The flasks are

TC Treated: The flasks are treated for cell culture applications

Convenient Size: Packaged in a 500ml bottle

Uniform Wall Thickness: With uniform wall thickness distribution

Clear LCD Display: The large LCD display provides clear readings

one of which is bored and equipped with an 8mm diameter tube for easy connection to a vacuum pump

Deluxe 50cm(20") Recording Bass Drum With Mallet Perfect TC Treated: The flasks areIncluded: Deluxe 50cm(20") Recording Bass Drum With Mallet. Produces a refined focused sound with enhanced rounded and deeper tone. Extremely durable and its big size provides for greater ease and efficiency while playing. Premium Quality: High Grade construction all the way through, excellent build quality and proven reliability across the range. Designed for use in professional studios but is an ideal choice for classrooms and household use. If you