This is the Kastaplast K1 Guld.
The Kastaplast K1 Guld is a fast, Speed 13, overstable distance driver. This is one that Kastaplast throwers have been waiting for a long time to have that disc that will stand up to more torque and power, great for overstable drives and wind-fighting, as well as big flare skips with that Speed 13 rim.
Flight Ratings: Speed 13, Glide 5, Turn -0.5, Fade 3
About the plastic: K1 Line is Kastaplast’s super durable material that has a nice combination of firmness and gumminess. Disc golf discs in the K1 Line have both solid and translucent colors.