This is a bridge pin lock system FIXER made by GUITAR WORKS. (Metric, chrome finish, standard size) A 0.5mm thick washer for string height adjustment is also included, allowing compatibility with Les Paul Special and Junior models. I am selling it because it did not fit my guitar. I opened the bag once to check it, but it has not been used. The bag is not included. - Model: #1642-C - Brand: GUITAR WORKS - Type: Tailpiece Lock System - Contents: Bridge pin lock system parts See below for details. https://www.guitarworks.jp/fs/guitar/1642-c#1642-n #guitar works #fixer #Gibson #Chrome #milli #fixer #LesPaul #chrome #milli #guitar