MTech USA 4.75 Inch Closed Special Forces Spring Assisted Opening Knife - Tophatter's Inc. Weapons Store OnlineMTech USA 4. 75 Inch Closed Length. Black Stainless Steel Blade. Black and Tan Aluminum Handle. Includes Pocket Clip and Special Forces Logo Features Spring assisted knife 3. 7" 3. 8mm thick blade, stainless steel Black blade 4. 75" closed Black & tan 2 tone anodized aluminum handle Iincludes black pocket clip Opening is the same as regular folder, but once the opening process is manually started, then the Internal Spring Kicks in, and helps to fully