The display says: HEAVY DUTY This ruler is made of thin steel. Faint, wavy, for the first time I see a square ruler that can be bent with your fingers. The aluminum handle is also the first. It is attached to the ruler with aluminum pins. In addition, there were no burrs on the handle. Aluminum shards can't make me bleed, but why would I need shards or cuts. I had to file the edges. The yellow back and black letters are just gorgeous. Visibility is the reason I bought it.