The Wooster Roller Sleeve End Cap is a small, specialized component designed to fit onto one end of a roller frame, specifically for roller sleeves with a 1.5-inch diameter core. This single cap serves a crucial function by preventing paint from seeping into the hollow core of the roller sleeve and potentially dripping out, which helps maintain a cleaner finish and simplifies clean-up of the roller frame. It also provides a smooth, enclosed end to the roller, minimizing the likelihood of leaving an uneven ridge or mark on the wall surface when rolling close to corners or edges. This small, reusable accessory is essential for maintaining professional quality and efficiency when painting.