Hercules Sagemann Knipkam, no. 1628-401 - 21,6 cm Hercules Sagemann Knipkam, no. 1628-401 - 21.6 cm is a great comb specially for cutting. This comb is very light and feels great in the hand. Hercules Sagemann Knipkam, no. 1628-401 is 21.6 cm long.