I purchased this new from an overseas manufacturer a long time ago, but the string hole positions didn't fit my guitar, so I kept it in storage without using it. This is a steel block for synchronized tremolos, such as those found on Stratocasters. It's heavier than typical tremolo blocks, weighing approximately 234g. I bought it because I heard that replacing the tremolo block with a heavier one could improve the sound. The condition has multiple scratches and marks. I measured the hole spacing with a digital caliper: Length from the center of the 1st string to the center of the 6th string: approximately 56mm String spacing: 10.8mm Mounting hole: 45mm Spacing between mounting holes: 22mm Please understand that there may be some errors due to amateur measurements. This is a used item that has been handled by someone else, so please understand that. I would appreciate it if you could read my profile before making a purchase, as there are some things I would like you to confirm. #GuitarParts #AnonymousDelivery