Wooster BR047-18 Sherlock Wide Boy Hulk Adjustable Roller Frame, 12" - 18"Wooster Sherlock Wide Boy Hulk Roller Frame adjusts to fit all rollers 12" to 18" in all nap heights. To reduce fatigue, its extra strength design weighs less than one pound. Quick cam levers unlock and securely lock the frame arms. Simply lift both red levers with your thumb, slide the arms to the desired width, and insert the roller cover, than push the levers down to close and lock. Adjusts to hold roller covers 12" to 18" long with 1 1 2" standard