Rods made from polypropylene with brass Universal joints. (Drain cleaning contractors will note the addition of thicker (25mm dia) and longer (up to 1.8m) rods used for clearing manholes and are stiffer than our regular 19mm diameter). Sets are supplied with rods and fittings as indicated, each set with straps. This set includes 4in. 100mm Plunger and Double worm screw. Length 30ft 9m. Universal Joint. Dia. 3/4in. 19mm. 10 rods in set.