Filter Flipper Knife The all-steel design really shows off the BlackWash finish we put on both blade and handle. The coating provides an extra measure of protection for the metal, and the BlackWash finish helps hide any additional scratches you might put on your knife during normal use. The Filter is equipped with SpeedSafe assisted opening for fast and easy one-handed opening. It opens neatly with the built-in flipper or thumbstud. A sturdy frame lock safely secures the blade open during use, and then closes easily for storage or carry. BlackWash SpeedSafe® assisted opening Flipper and thumbstud Frame lock Deep-carry pocketclip Steel: 3Cr13, black-oxide BlackWash™ finish Handle: Stainless steel, black-oxide BlackWash™ finish Blade length: 3.25 in. (8.3 cm) Closed length: 4.5 in. (11.4 cm) Open: 7.75 in. (21.6 cm) Weight: 5 oz. (143 g)