These Cobra Products Flat Sewer Rods are for all sizes of sewer drain pipes. The two piece adjustable grip handle helps force the flat rod with roller head back and forth quickly and easily. These Sewer Rods also feature oil tempered, spring steel sewer tapes. Cobra, 3/4 inch x 1/16 inch x 100' flat sewer rod. The product is manufactured in china. Easy installation and easy handling.