Open the lid at the seam, eliminating any cutting into or blade contact with inner can or food product. No sharp edges on the can or the lid. Screw down base only. Other features include: • Lid never drops into can • Perfect for opening #10 cans • Opens cans up to 13" in height • No need to adjust for various can heights. Set height at your tallest can and still open smaller cans using a "lock in" feature that holds can and lid in place until you release them. • Dishwasher safe • NSF certified • Heavy duty construction • Easily mounts on most commercial tabletops and countertops