Shur-Line 6550 Collet Lock Extension Pole, 4-Feet to 8-Feet,Shur-Line,6550" /> 7/8 inch aluminum inner tube Universal reinforced plastic threaded tip 4' to 8' size Universal acme threaded tip with a metal support insert Robust chuck and collet lock Extends from 4-feet to 8-feet Fiberglass outer pole with an aluminum inner pole for strength and light weight