The mold is made of polypropylene and is bendable and flexible.
The mold is transparent enough to harden UV resin well. But also suitable for silver clay.
Dimension of the mold is 100x90x18mm.
Large of the letters is approximately between 6mm and 10mm depending on the letter you choose.
Heat resistant to a temperature of 70 degrees Celsius and a cold temperature of -20 degrees Celsius.