The key element in our Jumbo-Koter program, these frames have the exclusive, easy-roll cage. Like high-quality standard frames, the roller moves freely and won't slide up the wall. Each frame accepts both 4-1/2" and 6-1/2" rollers; choose from 2 different lengths. Because the system is unique, Jumbo-Koter rollers only work with these frames. Constructed with solvent-resistant plastic cage for extra-smooth rolling action. 1/4" shank is chrome-plated. Professional polypropylene grip with reinforced threads is compatible to Sherlock GT extension pole.