ROLLINGDOG 12-18 Adjustable paint roller Frame The Molossus adjustable roller frame was updated with enlarged pins to improve rolling and reduce errors. The larger pins attaching cover to frame, as well as markers for precise centered alignment, help keep even pressure along roller for more even application.This is especially helpful when using frame attached to a long extension pole. The frame has a comfortable rubber gripped handle and easy twist knobs to adjust for different sized covers.