1. Holes are not punched equidistant from margin. 2. Holding papers in place while pressing handle is awkward. Papers easily slip out of position. 3. Positioning slide bar slips out of desired position too easily.
Reluctant to purchase at first. But when I remember how my sister's school project ended-up in a total disaster because of cheap unreliable hole-punch I bought this product with no hesitation. Now she's so happy. Hence I'm happy.