It is a knife first, with multi-functional implements second. The Obsidian clip knife features a high-grade blade with dual thumb studs for one-handed opening and a safety-style lock that ensures the blade stays open or closed when you need it to. Additional implements include philips and flathead screw drivers, and a bottle opener. Overall Length: 7.06" Length of Blade: 3.13" Blade Material: Stainless Steel 7CR17 Blade Style: Dual Thumb Studs Blade Type: Serrated Edge Handle Material: Strong Glass filled Nylon