1, plus weapon skills, such as dagger proficiency. But this kind of equipment is rare, and the effect will not come out. Humans have five points of fencing.
2, plus physical hits, there are many such equipments, but they are all the best. Hit+1% is the difference between blue and purple. And level 22 hardly hit. You can consider it after 60.
3, talent, dual-weapon specialization combat talent, can improve the hit of the deputy. You have two weapons. If you hit them, you will be punished. It would be better to add this talent.