This is a floating tremolo unit that was installed on a Squier (Made in China) guitar. I'm selling it because I removed it and replaced it with a different unit, having hardly used it. (String spacing E to E is 50mm) As you can see in the photos, the metal cutting and finishing are beautiful, even though it's made in China, and the quality surpasses the original. (Please note) The arm is included, but the six mounting screws for the body are not included. Please be aware of this.