Jameson 12-165 (Millennium part 545986) is a duct rodder accessory measuring roughly 11 in wide by 9.5 in high and weighing 0.3 lb, designed to work with Jameson fiberglass rodder systems used to proof duct and pull line for fiber placement. Correct end fittings and tips determine whether a rod negotiates bends and offsets or hangs up short of the next handhole. At well under a pound, it adds nothing meaningful to the load a crew carries between vaults. Stocking the matching accessory keeps duct-proofing and rope-pulling work moving on conduit and innerduct installations.