Wohler Viper XXL 3337 is a perfect tool for sweeping and cleaning of large chimneys, ducts and pipeworks. Wohler 3337 Viper 11 mm 300 ft. Made in Germany.
** Due to the variety of uses and needs, Viper cleaning systems do not include the cleaning brushes. When purchasing brushes, it is helpful to keep in mind that brushes should be up to 2" larger than the diameter of the chimney or vent that is being cleaned.
Brush Types:
Stainless Steel Bristle Wire: Thin stainless steel wires that have been crimped. Excellent for soft to medium soot in all chimneys.
Stainless Steel Flat Wire: Premium flat wire for harder deposits in masonry/tile chimneys.
Perlon: Black plastic fiber for light condition sweeping in stainless steel chimneys. Heat tolerant to 122°F.
PEK: High Tech Synthetic Fiber for light condition sweeping in stainless steel chimneys, ducts, or pellet stoves. Heat tolerant to 300°F.
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
