CENTA FLEX B ModelElasticity-rich plastic ( polyurethane or polyester) is used for the cushioning material as an element. It is excellent in absorbing vibrations and shocks during power transmission. Noise is also reduced. The CF-B-H type with polyester resin excels in resistance to heat and low temperature and has over twice the torsional rigidity of polyurethane resin. Due to the compact and simple design with an element between two hubs, mounting and dismounting are easy. Maintenance is easy as well.