These nonconductive fiberglass rods can be screwed together to form longer lengths for running wire through walls, attics, crawl spaces, sub-floors, and suspended ceilings.Kit includes 10 39\" rods with threaded brass connectors, a 6-1/2\" flexible acrylic connection that can be set to any angle, a brass hook end for pulling, and a brass eye end for pushing Can be extended up to 33 feet Plastic storage case Fiberglass diameter: 3/16\"; Fiberglass section: 39-1/4\"; Brass connector dimensions: 7/8\" L x 1/4\" diameter; Thread: 4mm x 0.7; Case dimensions: 39-1/2\" L x 1-7/16\" diameter