Chrome Guitar Locking Tuners - JN-07SP Machine Head for Precision Tuning | Perfect for Electric & Acoustic Guitars, Studio & Live Performances

These are fine 19:1 "JIN-HO R 1-4", 1-2, and 1-1 tuners. Very similar to JN-07 SP Lock, but with different cast markings.Markings don't match any listed on Jin-Ho's websight. Entire set is of uniform low height regardless of random numbers that do not seem to indicate position. These are also extremely heavy and may contribute to neck dive. Was hoping to replace semi-closed without drilling, but tabs are at a slightly misaligned angle. New holes will need to be drilled so close to the old, that filling old holes with toothpicks will be required. Lube is scarce, but I found some goop when replacing the buttons, not entirely forgotten during assembly. Moves smooth, so maybe dry is how they are supposed to be? Shipping was fast and well wrapped. Correct quantity of left and right arrived together from separate orders. Exact matching left set from same seller inaccurately described as both Wilkinson and JN-07 SP.