The finest model of the Spider Wire brand Ultracast Fluoro Braid. Fluoro Braidachieves a high specific gravity of 1.33, which is far higher than the average PE of 0.97, due to the 50:50 combination of microdyneema and gore fiber! In addition to being easy to sink and strong against the wind, it also has three times the shock durability than usual! Please use it for punching methods in heavy cover areas such as weeds.