K1 Glow BergK1 Glow Berg Kastaplast Berg is designed for distinct shots. 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 from any other putter. Thrown off the tee, the Berg exhibits good high speed stability without a very hard fade, a combination which makes it easy for this disc to shape various lines. Trust the Berg to not hover far past the basket even on