Wooster Brush BR047-18 Sherlock Wideboy Hulk Adjustable Frame, 18-Inch Adjusts to hold roller covers 12 Inch to 18 Inch long with 1 1/2 Inch standard or 2 1/4 Inch jumbo diameter and can be used with all nap heights Quick cam levers unlock and securely lock the frame arms and no loose hardware Rigid tubular steel frame arms and a durable fiberglass reinforced nylon body Extra strength design weighs less than one pound Reinforced threads and is Sherlock GT compatible and either R087 or R088 endcaps.