Hexagonal aluminum inner pole prevents twisting; rugged fiberglass outer pole. Easily adjusts in 6" increments with a touch of the thumb, then locks securely in place. Universal threaded tip works with all popular tools. Made with a hexagonal aluminum inner pole and rugged fiberglass outer pole, the Wooster Brush 6-to-8-foot sherlock adjustable paint roller extension pole prevents twisting. It easily adjusts in six-inch increments with a touch of the thumb, then locks securely in place. The universal zinc die-cast threaded tip works with all popular tools.