Features: 1.Adopted of alloy material, Features good elasticity, and excellent retractable recovery performance 2.The elastic coefficient is constant in the 100 thousand compression and tensile tests 3.Surface plating, preventing oxidation and rust, is special spring for guitar tremolo system 4.Great Guitar Tremolo Bridge springs, suitable for ST type electric guitar. 5.Improve the problems of electric guitar's out of tune, the tremolo insensitive and so on specification: Adopted of alloy material, features good elasticity, and excellent retractable recovery performance. The elastic coefficient is constant in the 100 thousand compression and tensile tests. Surface plating, preventing oxidation and rust, is special spring for guitar tremolo system. Great guitar tremolo bridge springs, suitable for ST type electric guitar. Improve the problems of electric guitar's out of tune, the tremolo insensitive and so on. s: Color: chrome Product size: 6.95 * 0.86cm/2.74*0.34inch Material: metal alloy Weight: 70 g Package Included: 6 x Guitar Tremolo Bridge Springs