SMART ROLLER The Wagner SMART Roller will transform your home faster than traditional paint rollers, giving you more time to enjoy your freshly painted walls and ceilings. This paint stick roller is a paint roller that holds paint directly in the handle, eliminating the need for roller trays.A simple squeeze of the ratchet power trigger directly feeds paint to the paint roller cover. When you need more paint, the refillable paint roller draws paint directly from the can.The paint tube roller is perfect for medium-sized projects, and the extended handle lets you reach 8' ceilings with ease. Features Handle with built-in paint reservoir holds up to 22 ounces to paint up to 70 square feet in one fill Extended reach reduces need for ladders Includes fill tube and 9" x 3/8" roller with removable core/cap For use with oil and latex (water-based) coatings. Filling the main Tube Apply a thin layer of petroleum jelly to the fill tube. This will help the fill valve slide easily off the fill tube. Clip fill tube to paint container. Press down and firmly hold the fill valve onto the fill tube. Pull the plunger to draw the material into the main tube. When the tube is full, you are ready to begin using the SMART Roller.