Halloween Butcher Knife PropButcher Knife Prop. We are proud to present the Official Halloween II Butcher Knife Prop! Made from quality safe polyurethane foam, this amazing 17 1 2" knife looks like real stainless steel with a true wood finished hilt! You will swear that this was the original screen used Lamson knife held by the most famous serial killer to ever walk the silver screen! This knife is cast from injection plastic and painted to look hyper realistic without the