Our ‘Drain Master’ Sets are used for cleaning, clearing and unblocking drainpipes. Manufactured in the UK from polypropylene and are joined by brass ferrules, which are riveted to the polypropylene for maximum security. Supplied with either a Universal or Lockfast Brass Couplings, and a range of tools and fittings to suit your needs. The Universal type of coupling has a coarse thread and simply screws together – rod rotation must always be in a clockwise direction to avoid parting. The Lockfast coupling has a finer thread – joining is effected by locating the square pin on the male joint in the slot on the female joint. The loose nut is then tightened to complete the joint. The rod can now be safely rotated in either direction.