I used a Labrico system, which uses 2x4 lumber as a tension-mounted pillar, for about three years. It has an automatic locking claw like Hercules, so it didn't collapse even in an earthquake. ※Warning! It cannot be used with gypsum board, which is used in most Japanese homes. Your beloved instrument (guitar) will fall due to insufficient strength. This is not a problem with the product, but because the gypsum board is weak. Therefore, we recommend using Labrico or Dia Wall to secure it firmly. The hanger can be removed from the base. There is a spring in the hole of the base, so strongly push the hanger towards the base, and when it is all the way in, turn it. It will come out. When inserting, do the opposite operation.