Features - Color: Blue -Material:Metal - Size: 7.00X0.90X0.90cm/2.75X0.35X0.35in - Made from metal materials, the tremolo tension springs is safe and durable, can be used for long time. - These tremolo bridge springs are suitable for electrical guitars, easy to install and convenient to use. - The guitar bridge spring has good elasticity and resilience to ensure the effect of vibrato. - Practical electric guitar bridge springs can be good presents for electric guitar amateur, can win their favors very well.