This rubber knife was used in a few scenes with Jon Gries playing Harvey Hatcher, Hatcher's (Christopher Walken's) brother in the movie "The Rundown".
The knife can be seen being wielded at Dwayne Johnson in the bar fight scene and on Jon's belt at the end battle. Doing more research about the knife and whips I found that the knife was drawn be production illustrator Patrick Janike. The knife can be seen on his site.
