This knife features a #2 blade for precision cutting of medium to heavy-weight materials such as wood, board, paper, plastic, acetate and more. The #2 Blade from X-ACTO is a heavy duty blade designed to cut through medium density materials while maintaining an exceptional level of precision. The medium weight blade features a considerably fine point for a cardboard knife. Details:5" aluminum handle#2 blade for precision cuttingBlades resist corrosion and won't rustUses 20 series blades