Space age high performance alloy - Nitinol Superelastic wire is extremely elastic and strong, able to take extreme forces and stretch 10% without permanent deformation. Nitinol is biocompatible, hypoallergenic, impervious to most acids and alkalis, and does not corrode in sea water. This wire is commonly used in medical applications, fishing, antenna building, and other applications that require a material that can take abuse over and over again without damage. This sample pack allows you to find the ideal wire gauge / diameter for your needs. 6-pack includes 1 foot of 0.3mm, 0.5mm, 0.8mm, 1.0mm, and a 7 inch section of 1.6m and 2 mm wires to give you a wide selection of wires to play with to find the ideal nitinol superelastic wire for your needs.