This professional dual-blade knife combines 2 blade shapes in one knife. You can flexibly choose between a trapezoid or hook blade for cutting solid materials. This eliminates the need for time-consuming blade changes or switching to a different knife. You can extend the blades using separate sliders, whereby you can only activate one slider at a time for safety. When cutting, the robust metal housing sits comfortably in the hand thanks to the ergonomic soft zone. You can easily change blades without additional tools. Spare blades can be stored in the integrated blade magazine.