-LENGTH – Length of 12 inches/30cm

-DIAMETER -The diameter of the rods is industrial 15mm standard

-INNER THREAD – M12 inner thread on each end of a rod, so that you can 1) use M12 threaded connector (SMALLRIG 900) to lengthen the rod 2) use M12 rod end cap (SMALLRIG 1617) to prevent your accessories sliding from rods