These strap pins/lock pins, which feature a non-loosening nut (explained in photo 8), are sold exclusively by Shimamura Music. ○ Used a few times in live performances. ○ There are scratches and dullness on the metal parts. ○ The felt holes are slightly widened (photo 6), but they were still usable without any problems. (You can also use the felt from your existing equipment.) ○ The number and color of the screws differ from the accessories listed in the manual (photo 7), but this is how they were when purchased, and all accessories are included. ※ After researching, I found that there were versions with different felt colors, so there may have been a minor change.