Drain Augers, Closet Snakes & Sewer Cameras

What is the advantage of an 'Inner Core' steel drain cable over a standard hollow wound spring cable?

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 Correct IncorrectAn inner solid aircraft-grade steel core prevents the coiled outer spring from kinking or twisting back on itself when meeting high rotational resistance against roots or solid blocks.

What is the advantage of an 'Inner Core' steel drain cable over a standard hollow wound spring cable?

• It makes the cable translucent on video cameras
• It conducts electrical current to dissolve grease
• It makes the snake float in flooded basements
• It resists kinking and buckling under high rotational torque against tough obstructions