The black 21329 35mm Adapter from K&M is designed for satellite-speaker systems. The short 9.8" adapter can be used as a single rod or as an extension rod. The adapter with a tube diameter of 35mm has an M20 male threaded bolt on the one end and a M20 female thread on the other end. With the adapter, the rod can be expanded to any length.
K&M 21329 Specs
1 x M20 male threaded bolt 1 x M20 female threaded bushing