Quebracho box with Surinam Cherry top. Hand chased threads. I found the top in the box of leftovers, so I used it... The Quebracho was given to me by good friend Leitoo Martinez. Practice makes perfect, I will be doing my demo about boxes with threads at the AAW annual symposium in Raleigh, North Carolina next year. Quebracho is nice and good for threads, but Palo Santo is clearly better.