The Joker used a distinctive out-the-front automatic knife to intimidate Rachel Dawes at Harvey Dent's fundraiser.
This is the same make and model knife as the one depicted in the movie, a Smith & Wesson Extractor 1600. Although virtually identical to Robbie Dalton's 'Cupid', S&W did add a lock at the base and changed the handle inlays for the Extractor. Super fast razor sharp double edged blade, side charging lever, and black hardcoat finish alloy handles.
