This is a Kurokumo Ventures Mosrite. The bearing-equipped bridge rarely goes out of tune no matter how much you use the tremolo arm, unlike normal bridges which tend to have play. This bridge uses six bearing blocks held down by a plate, so it doesn't move and has incredible sustain. The bearing bridge cost 80,000 yen. There are other bearing bridges available, but they only have bearings added to a normal shape, so the function is different! Thank you. Comes with a hard case. The scratches in photos 3 and 4 are the same as the scratch on the right in photo 3. The bridge position is 0.7mm forward, but it's the same as the normal position! Octave Tuning Procedure: 1. Tune the octaves with new strings. 2. When tuning all octaves, loosen the 10 torque screws that are holding down the blocks with the included torque wrench. 3. Do not loosen the 3mm Phillips head screws used for octave tuning (there is no need to loosen them at all). 4. If you are only tuning the 3rd string octave, loosen the torque screws holding the 3rd string block, as well as the adjacent 2nd and 4th string blocks. 5. Then, turn the octave tuning bolts to tune, and tighten the torque screws when finished. (Caution) 1-6 string blocks have different heights and are made with the fingerboard radius (marked on the bottom of the blocks). 6. Bridge lock screw pitches 70 and 71 can be installed. The mounting holes are slotted, and are processed to fit 70mm Japanese-made and 71mm Hillmore-made.