Whatever you do, DO NOT buy this product. The metal it is made of is cheap and malleable. The knife edges started to curl immediately, which led to tuning instability. The pop-in whammy bar mechanism on this is a good idea, but in practice, it does not work. The plastic piece inside wears out and the set screw begins to scratch your whammy bar, making the whole thing loose and wobbly. You're better off saving your money and getting a Gotoh bridge instead. It is made of high-quality materials and will last much longer than this.