Wooster Jumbo-Koter Shergrip Roller Frame is high-quality standard frames, the roller moves freely and won't slide up the wall. Each frame has different lengths 4-1/2" and 6-1/2". 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. Soft green Shergrip elastomeric handle adds comfort is threaded for extension pole use and Sherlock GT compatible. - 11" Size, Jumbo Koter Type and Threaded Handle Type.