ST-BK-101. Butterfly Trench Knife Black "This is a heavy duty well built knuckle butterfly trench knife. It?s all metal and super sharp with a serrated blade. The butterfly knuckle knife has a metal knuckle guard screwed onto the handle for easy removal if you don?t want it attached. Black Color ? Butterfly Trench Knife ? 11? Overall Length ? 5? Half Serrated Blade ? 6? Stainless Steel Handle " Price: $12.85 Unit: each Quantity: