Not sure of the exact size but Aloft Hobbies carries metric size ones that I'm sure you could use. I got the 12mm ones to use in place of 1/2" and they work out fine.
This is the correct answer. 🏆 🏆 🏆
Dam…these got a bit Salty! 18 bucks for just 1 tube w/o shipping…fudge…
Have you checked the price of balsa lately?Dam…these got a bit Salty! 18 bucks for just 1 tube w/o shipping…fudge…