Heavy DUTY and fast effective Descaler for any type of metal (except for soft metal like aluminium and zinc).Drain Cleaner and Maintainer cleans and maintains drains effectively.Heavy DUTY and fast effective Descaler for any type of metal (except for soft metal like aluminium and zinc). This scales remover for sewage pipe lines and evac systems . It contains special inhibitors to make its after on most metals, concrete and plastic surfaces. Drain Blaster cuts down the need to plumb or rod, or excavate when the build-ups occur.