Steve, I can't get pictures to show the off set edges as the shine on the angles kinda obscures the propeller like twist to the camera. I guess the best way I can describe it is---if you were to push it into something, the head would start to twist on it's own. It matches the twist of LW feathers. I'm not sure if there is any + or- thing. But it really exaggerates that LW single bevel. If I'm lucky enough to harvest a hog or javie, I'll definitely take some necropsy pictures...Doc