Product overview A flexible shaft sewer descaling chain designed for unclogging and descaling smalldiameter pipes. Compatible with 16mm springs and 1/4inch universal drill bits. The hardened stainless steel chain and matched screw heads scrape away hair, grease, scale, and other buildup while preserving the pipe surface. Key benefits Effective removal of stubborn buildup: Matched screw tips on the metal chain rotate to mechanically scrape and dislodge hair, grease, soap scum, and scale from the inner pipe wall. Gentle on pipes: Hardened stainless steel construction delivers strong cleaning power without cutting or scoring pipe surfaces when used properly. Fits common tools: Works with 16mm springs and standard 1/4inch universal drill chucks for fast attachment to hand drills or powered drain cleaners. Flexible and adaptable: The flexible shaft design bends to follow multibend and tightradius plumbing runs, making it suitable for Ptraps and other curved sections. Durable construction: quality stainless steel components resist wear for repeated use in household maintenance tasks. Main features Compatibility: Suitable for 16mm springs and 1/4inch universal drill bits. Material: Hardened stainless steel chain and screw heads for durable, aggressive cleaning. Function: Mechanical descaling and unclogging by rotation; removes hair, grease, and adhered debris. Design: Flexible shaft provides good adaptability to complex pipe geometries and multiple bends. Practical use scenarios Shower drain with hair buildup: Insert the flexible shaft into the drain and rotate with a 1/4inch drill or compatible tool to break up and extract hair clogs. Basin trap and sink Ptrap cleaning: Bend the shaft through the trap and turn to scrape away accumulated grease and soap residue from the inner wall. Smalldiameter or multibend pipes in campers and utility sinks: Flexible design navigates tight turns to remove scale and debris that restrict flow. How to use Attach the chain to a 1/4inch universal drill chuck or connect to a compatible 16mm spring assembly. Feed the flexible shaft into the drain until resistance is met. Run the drill at low to moderate speed while advancing and retracting the shaft to scrape and clear debris. Flush the line with water to remove loosened material. What makes it stand out Combines a hardened stainless steel chain and matched screw tips for effective mechanical scraping. Flexible shaft construction enables access to curved and multibend plumbing runs that rigid tools cannot reach. Direct compatibility with commonly used 1/4inch drill chucks and 16mm springs simplifies setup. Notes Use appropriate drill speeds and steady control to avoid tool slippage. For results, follow with a water flush to clear loosened debris.