I doubted its effectiveness, but that was before! It cuts extremely well whether the grids mandolin or the efficient peeler peeling in both directions. Blazing fast especially for potatoes that I often eat, it is also very good. Quality is at the appointment and ergonomics. Just two quibbles: - I would prefer a mandolin adjustable for thickness (instead of pressing a little above) - And the little security tool to prick the fruits and vegetables used along with mandolin, pikes are not close enough together so not obvious to all prick with.