Perfect for both professional coaches and casual enthusiasts seeking reliability tension maintenance and stringing efficiency 0.7mm diameter design balances control and elasticities, enhancing shot accuracy while maintaining a responsive feel for player of various skill levels High badminton rackets string consist of premium nylons / polyester materials for durability and resistance to breakage during intense playing Each 10 meter spool ensures multiple restringing cycles, combining cost effectiveness with premium playability for years round courts dominance Delivers tournament grade in competitive competitions, training drill, or backyard game with consistent power transmission and shock absorption