New, one-owner item. Used on a Fender CS Stratocaster. No live use, so it's in relatively clean condition. The arm was hardly ever attached... This is a genuine import by Human Gear. Will be packaged with bubble wrap and shipped via Takkyubin Compact. ↓ The manufacturer's description is below ↓ This assembly may be the best choice to improve the sound quality of your guitar or to bring it back to life. The non-electric parts depend on the quality of the strings and this tremolo assembly that holds them. A top plate and block with a sound quality that cannot be obtained with hard material screws, or those cheaply made of mere iron, and a bridge designed with even the hole shape in mind, with stainless steel screws. An arm that is easy to use and changes the sound quality. It is made to improve the sound quality, overtones, and sustain, even in areas that were not considered by previous brand holders. The proof of authenticity is the HUMAN GEAR sticker on the block. The tremolo block is made of UNS1018 Cold rolled steel, allowing for long sustain, beautiful overtones, and fast response. Also, an insert is inserted into the arm hole to eliminate arm wobble. Although regular arms can be used, we recommend using a Callahan stainless steel arm. The arm is inch-sized stainless steel. The length is 135mm. The threading is traditional and pop-in, and when combined with the Callahan block, there is no wobble, and the bottom spring, which is often lost with pop-in, is not required. The distance between the center of the screw holes that fix the bridge, from the 1st string side to the 6th string side, and the distance between the 1st and 6th strings is 2 7/32 (approx. 56.3mm). ■ Package Contents Bridge body x 1 Tremolo arm (135mm long) x 1 Spring hanger x 1 Hanger mount screws x 2 Mount screws x 6 Tremolo springs x 5