Unbending filaments were a type of Precursor construction. It was noted that they could link entire worlds and systems. Like most Precursor technology, they were also virtually indestructible. As they were based on the principle of neural physics, they were susceptible to the Halo Array's pulse in spite of being indestructible to virtually everything else. All Precursor structures on Charum Hakkor were destroyed when a Halo was test-fired nearby.