A 3/4 -inch spanner will be needed to secure Lockfast Rods. Drain Rod Sets. Manufactured from polypropylene and brass Drain Rod Sets offered as: Universal Set ( ; 388-8257 388-8257 ), which should only be rotated in a clockwise direction Lockfast Set ( ; 388-4334 388-4334 ), which can be rotated in either direction and will remain secure in the most demanding conditions Both sets come with a 4 piece kit consisting of cleaning wheel, 4 inch drop scraper, 4 inch plunger and 2 inch double work screw Each kit contains 10 x 3/4 inch x 3ft rods