K1 Line is Kastaplast’s super durable material with a nice combination of firmness and gumminess. Discs in K1 Line will appear in both solid and translucent colors.
K1 Soft is similar to K1, but flexier and grippier. Just as with K1, this plastic comes in both translucent and solid colors.
K3 Line is our base line plastic – grippy in all conditions. With this plastic you will get that nice worked in feel quickly. Compared to other base plastics, K3 is medium soft.