The triangle tube of the telescoping hot stick have maximum convenience for the lineman because they permit them to perform many routine jobs from ground level. The universal end fitting on the insulated top section accepts a wide variety of attachments, so the lineman can disconnect switches, replace cutout tubes and reclose, remove pole covers prune trees, replace bulbs and complete many other overhead tasks. The triangular tube section is shown as below pictures, approximate triangular arc is the most comfortable shape of hand grip. approximately triangular shape can avoid axial sliding during torsional operation. Compared with the traditional round tube, it is more stable, easy to connect to the operating part and easy operation.