This round simulated sinew (also commonly referred to as artificial sinew) is made with twisted waxy strands to form a nice round shaped thread. Because of this, it is much stronger than regular flat sinew. Certainly round artificial sinew is a better option for projects that do not require splitting the sinew into thinner plies. Ideal for stringing chokers and breastplates. Spool weighs 1/2 pound and contains approximately 1000 feet of sinew.