Flexible, easy-screw polypropylene rods with steel-plated rivets Universal zinc-plated joints featuring crimped and pinned connections to the rods for extra strength Clockwise rotation for a tight connection Used for extending the length of general purpose domestic drain clearing rod sets Rod length: 920mm and bore diameter: Fitting - 16mm ID, Pipe - 12mm ID Compatible with Silverline Drain Rod Set and most third-party sets, Weight: 1.3007273458 pounds, Manufacturer: SLTL4