MTech USA MT-A936FD Spring Assist Folding Knife, Two-Tone Half-Serrated Blade, Black And Red Handle, 4.75-Inch Closed Spring assist folding knife offers rapid one-handed deployment, locks securely into place with liner lock 3.75-Inch, 3mm thick two-tone half-serrated stainless steel blade Black and Red aluminum handle with Fire DEPARTMENT logo Pocket Clip for easy and safe carry Measures 4.75 inches closed