The Berg is a very popular putter from Kastaplast. It is known for its distinctive shape, with a slightly recessed top that gives a good, different feel in the hand compared with many other putters on the market.
Kastaplast's K1 Grind plastic was introduced in 2025 as part of their goal of reaching an even more sustainable production. K1 Grind plastic is made from offcuts and misprinted discs in K1 plastic, given new life by being ground down and moulded into new discs. So it is pure premium K1 plastic that has simply been through the machine a second time. Discs in K1 Grind plastic are designed with a coloured centre and a white rim.
As K1 Grind is a recycled plastic, it can contain natural colour variation or marks that are purely cosmetic. These do not affect the disc's flight or durability.