The fret wire made of copper- material,good mechanical properties, thermostable, strong corrosion resistance, Beautiful chrome color, bright tone, delicate and surface, great for new guitar or guitar repair work The 11.5inch lengths allow you to cut the exact lengths you need. -cutted in 20 pieces quantities, easy of install, Radius is 15inch. Great for bass & electric guitars, banjos & more Features:Radian guitar fret wire Width: . 2.9mm / 0.11in Length: About 290mm/11.5inch Colour:silver Material:Copper Package Contents: 20 x Guitar Fret Wire Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.