Purdy 140665094 Pro-Extra Colossus Roller Cover, 9 inch x 3/4 inch nap Hexagon spring tension ring for secure roller cover fit. Use with 9" roller covers and standard 1-1/2" core diameter Lightweight space age aluminum alloy helps prevent painting fatigue Rubberized comfort grip handle fits QuickFit and Pro-Extra extension poles, as well as standard threaded poles