This Horotec flat crystal fitting die set consists of 5 pairs friction fit delrin dies for fitting watch crystals.
The sizes for the die pairs are:
20mm, 22.5mm, 30mm, 32.5mm, 40mm
The Horotec dies are delrin a thermoplastic used in precision parts that require high stiffness, low friction and resists changing shape. Delrin is said to be the bridge between metals and plastic.
For use with the Horotec Deluxe Case Press and the Horotec Improved Micro Case Press.