We have three different steel markers depending on the heat the steel will undergo.
cold for under 100 degrees Celsius
hot for between 100 - 600 degrees Celsius
very hot (vhm) for over 600 degrees Celsius
The only 2 available colours are white and yellow at the size of 120 x 12mm round.
They are packed 100 crayons per box weighing at 2kg's with the dimensions of 140 x 140 x 140 mm