Standard 5/8"-27 threads with solid brass male end and internal 3/8"-16 threads. * Ergonomically spaced and comfortable EVA rubber hand grips. (1) Fixed handgrip at base of pole, (1) slidable hand grip allows for custom set-ups. * Three telescopic rods extend the boom length from 3.1-8.1".Length settings lock/unlock utilizing a twist-and-lock system.