BG Exbolt 68 Reel 200MConstructed with a special material known as FORGED FIBER, the Yonex EXBOLT 68 Badminton String offers a unique combination of durability and quick repulsion, similar to the EXBOLT 63 and EXBOLT 65. The common issue of low durability normally associated with thinner string was addressed by strengthening the molecular bonds of the fibers. The shape of the FORGED FIBER has also been altered to an oval pattern in the new EXBOLT 68, limiting fiber