DryMaster’s the Bullet commercial duct cleaning equipment is used for both residential & commercial duct cleaning. The Bullet has it all for amazing and excellence performance. Powerful suction ability, adjustable high-speed 0-1400 RPM spinning brush, and with state of the art optional built-in HD LCD camera. This one of a kind Duct Cleaning equipment has a powerful ability to remove dusts and debris and is used by most professional duct cleaning companies.