I received this as a gift, but I'm not going to use it, so I'm giving it away. Fender USA American Deluxe STRATCASTER This is the inertia block that was on the bridge of the above guitar. 【Defect】 The arm broke off, and while trying to remove the remaining piece inside the block, a drill bit was used but also broke off. That's what I was told. It fit my American Deluxe, so I believe the part is correct. I definitely want to use the arm, so I'm letting this go, but those who don't need the arm can use it without any problems. The broken drill bit isn't quite protruding, but if you're concerned, you could lightly file it down or fill it with putty.