United Cutlery CIA Undercover Black Concealed Dagger. This discreetly compact knife was designed to be that easy-to-hide, backup buddy they don’t expect to sting them The stinger has a solid, one-piece 3Cr13 stainless steel construction with a 3 7/8”, razor-sharp blade and penetrating point A non-reflective, black oxide coating and weight-reducing thru-holes make this compact fixed blade perfect for covert missions The 7 1/8” overall knife snaps securely into a tough injection molded nylon sheath with a removable boot clip