Verktygskniv för kapning av en kanal, speciellt en ventilationskanal

摘要

Blade (2) of a tool (1) for cutting, e.g. for truncating, a duct (4), more particularly a ventilation duct, which blade (2) is fixed to the tool (1) in a detachable manner. The invention is implemented such that the tip part of the blade (2) is shaped to be sharp such that by means of it a starting hole can be punched in the duct (4).