Göldo Tailpiece Lock Studs M8

Sometimes when uncaringly removing the strings from a Les Paul tailpiece or wrap around bridge fell out of the studs and does horrible scratches to the paintwork on the surface .
There have been solutions to prevent this, but they made it complicated to adjust the height properly because the parts were moving together while tightening.
So how do you put two round parts together, that should move with each other when needed, but be able to lock them with no movement? "Hex into Hex" is the genius solution! This allows the tailpiece to be locked safely onto the non stringed guitar. Sold in pairs!