I believe this is a Greco Stratocaster SE, and this is the block-type bridge that was attached to it. I'm not certain, but I remember the guitar was made by Matsumoku. I'll also include the tremolo arm, but it's not specifically for this bridge. It fits, but the arm is slightly bent, so it gets tight after about three rotations. I tried another tremolo arm, and it fit in smoothly. The intonation screws and octave adjustment screws turn. Since it's an old item, please check the pictures, understand the condition, and purchase it as a junk item.