Wire, steel, corrosion resisting, aisi 302, spring temper; 52.750 in. O/a long; 0.065 in. Dia. Of wire; the looped end has a 0.250 in. Inside dia. Of looped end; 3 coils min; 0.770 in. Long including length of loop and coils; arming wire, primary comp of cbu 72 fae