Brute Fey'Ri are somewhat misnamed. They gained the name due to the extra pair of arms they sport, which caused many to believe that these Fey'Ri were stronger than others. However, their second pair of arms are usually much weaker, being unable to hold and carry heavy objects, and incapable of wielding weapons.
However, what these additional arms lack in strength, they make up for with utility. Many Brute Fey'Ri make for excellent battle mages, using their main arms for wielding weapons, while their additional arms are used to hold components and cast magical spells.