Movie Pressbook: Death Machines (1976)

I recently acquired this pressbook from eBay, mostly because the poster art is so 1970s exploitative gritty and cheesy-futuristic, you know?. Sadly, there are no "death machines" like the munching maw illustrated here. The story revolves around martial artists injected with a drug to make them killing, zombie-like, machines of death.  Get it? I'm not sure if the audience did.