The Black Diamond 33 PC Utility Knife Set is a cutting kit that keeps three go-to knives and plenty of replacement blades in one package. It includes 1 utility knife with 10 spare blades, 1 18mm cutter knife with 10 spare blades, and 1 9mm cutter knife with 10 spare blades to cover everything from heavier cuts to detail trimming. The utility knife features an aluminum alloy body, the cutter knives use durable ABS housings, and the high carbon steel spare blades deliver crisp, reliable cutting performance when you need a fresh edge.