Made of nickel titanium alloy which is perfect for recreating the tension line of 1/700 and 1/350 scale ship models. With very few rolls like regular segs and they are dyed bronze from the beginning, just tear them off and they are ready to use. 0.1 and 0.15 are 1/700 scale, 0.3 are suitable for 1/350 scale ships. Also great for securing airplane and tank models upholstery and antennas.

(From Amazon.co.jp)