The patent pending design incorporates not one, but two smooth-spinning rollers to cut painting time in half! The cage frames adjust in 30� increments�move one arm or both�to accurately fit different surfaces. It professionally applies all coatings; customize with any Jumbo-Koter miniroller. Made of strong copolymer polypropylene, the Wooster Pipe Painter has a thumb rest for comfort, or attach it to threaded or Sherlock GT extension poles for added reach.