China Made Ridge Linerlock Fire Dept A-O knives CN300380FF on sale now for $4.03. UPC code 801608303803. Type: Assisted Opening; Closed: 4.875"; Blade: 3.5" l Stainless l Standard Edge l Black Finish; Handle: Red l Aluminum; Other Info: Extended Tang l Inlay Shield l Pocket Clip l Thumb Ridge. Tanto blade. Glass breaker. Fire Dept. inlay shield. Boxed.