|Crystal Clear Hardener allows
you to modify the hardness of your plastic. Add and mix prior to
heating your plastic. This is a liquid concentrate, a little can
make quite a difference. Do not add more than than 10%.
We ship Hardener only
within Canada. We are not able to Export Hardener to the USA.
We can only ship Hardener
Ground (Expedited), we are not able to ship by air (Express or