When you're looking for a circular shaped chain knocker for PVC/ABS or other soft material pipes, the Light Duty Circular Chain Knocker is the one you're looking for. It does not have any kind of aggressive carbide bits that could harm pipe interior. This chain knocker is an excellent choice in two main situations:When you have a pipe without any tight bends and/or when you're concerned that the pipe might not withstand any blows from regular chain knockers. The Circular Chain Knockers does have their weaknesses. They are bulky tools, and they lack the flexibility needed to navigate through tight bends. But they do provide excellent descaling speed and quality since the chains are consistently in touch with the pipe they won't miss a thing to descale. If the condition of the pipe makes you worried the Circular Chains are a great choice. The circular design of the tool is based on centrifugal force effectively making this chain more gentle on the host pipe than standard multi-chained chain knockers. Most often these tools are used in cleaning & descaling deteriorated pipes where the concern for the condition of the pipe is real. The centrifugal force rotated chains makes for a safer tool for lines in bad condition. If you are thinking that even Circular Chains are too much, we highly recommend considering the Gentle Duty Brushes. How does it perform compared to other chain knocker options? In comparison this Circular option offers the widest descaling surface and great speed while being surprisingly gentle to the host pipe. It is the bulkiest chain of all other options and has the least flexibility to navigate from bends. For more flexibility with a cost of descaling speed we recommend 3-Chained or 2-Chained option. For maximum flexibility, with the cost of descaling surface we recommend considering Mini Chain or the 1-Chained option. Perfect tool for descaling straight PVC/ABS and other soft material pipes Like all the other Light Duty Chains, this Circular Chained option does not have any kind of hard metal (carbide) tips like Medium or Heavy Duty Chain Knockers do. This minimizes the risk of damaging the pipe's interior, making them the ideal choice for cleaning & descaling tasks in PVC, ABS, PEX, Copper and other fragile/soft pipes. It is also called as a "plain chain knocker".Light Duty Chains are also a great option when a pipe made from tougher material is in considerably rough condition (cracks etc) and you don't want to take any risks. So, if you want you can also use these chains in Cast Iron pipes as well. Available in following sizes: 50mm (2″) for flex shaft thicknesses of 8mm (⁵⁄₁₆″) and 10mm (⅜″) 75mm (3″) for flex shaft thicknesses of 8mm (⁵⁄₁₆″), 10mm (⅜″) and 12mm (½″) 100mm (4″) for flex shaft thicknesses of 8mm (⁵⁄₁₆″), 10mm (⅜″) and 12mm (½″) 150mm (6″) for flex shaft thicknesses of 8mm (⁵⁄₁₆″), 10mm (⅜″) and 12mm (½″) 200mm (8″) for flex shaft thicknesses of 8mm (⁵⁄₁₆″), 10mm (⅜″) and 12mm (½″)
