Sherlock GT Conv Extension PoleUSA designed and made, easily one of the best poles available, designed to be used with Wooster tools but also includes a universal thread for use with all standard roller frames. Sherlock GT poles have the only true no twist feature on the market. Instead of threads, the smooth Grip Tip holds Wooster tools in place so they cannot loosen. No need for pit stops to re tighten. Quick disconnect in two seconds flat. Change length with no slips as welljust