The RAP-B-218-1-GOP1U consists of a female hole base with 1" ball, double socket arm and custom GoPro® Hero adapter. The female hole base will fit most common telescoping and extension poles. The GoPro® Hero adapter attaches directly to the under-side of the camera, replacing the factory mounting bracket.Compatible Poles:Most generic telescoping poles with 0.715" OD ThreadsEttore 42004 4-Feet Reach Extension Pole
