Kastaplast K1 - Grind Berg - 174.3g - RedThis Disc: Red foil stamp See All: K1 Grind Bergs with Stock stamp. Mold: The Kastaplast Berg Putter in K1 Grind Plastic Speed: 1. 0 Glide: 1. 0 Turn: 0. 0 Fade: 2. 0 See all Bergs The Berg is designed for distinct shots, where you dont need to worry about the disc hoovering far passed the basket. The disc features an ergonomic thumb track which is prominent on the top side while not being noticeable at the bottom. This makes it feel very different