"KNOT 2 KINKY" KNOT-ABLE WIRE - Kink resistant, bite resistant and super elastic. Stronger than titanium wire and never corrodes. Under load this wire will stretch 15-20% for added strength. 15-feet per pak. (12-lb $8.95), (18-lb $8.95), (25-lb $8.95), (45-lb $11.95), (75-lb $15.95)