A tool head (10) for regulating top shoot growth (92) of a tree (90) by cutting bark, the tool head (10) comprises a first and a second jaw part (20A, 20B) and a first and a second punch (30A, 30B), the first and second jaw parts (20A, 20B) are interconnected and are at a first and second distal end (24A, 24B) connected to the respective first and the second punch (30A, 30B), each punch (30A, 30B) comprises a cut end (32A, 32B) in communication with a disposal end (36A, 36B) via a channel (38A, 38B), the jaw parts (20A, 20B) are pivotal such that a punch distance (60) between the punches (30A, 30B) is changeable.
