Wooster Pro Sherlock Wide Boy Roller Frame adjusts (wingnuts) to fit roller covers 12 in. to 18 in. long and all nap heights. A great high-production tool to save time. To reduce fatigue, its extra-strength design weighs less than 1 lb. This high production roller frame must attach to a threaded pole or can clip to Wooster Sherlock GT poles. Endcaps are required for the roller covers. Features: Rigid tubular steel frame arms and fiberglass-reinforced base for pole attachment Great for use on large areas in less time, especially floors and walls Threaded base for attachment to all extension poles Easy clip-on/clip-off compatibility with the Wooster Sherlock GT poles Roller covers require endcaps to function on this roller frame.