I still have several of those. A very useful tool to this day! I went down to Myrtle Beach for spring break in 1969 with three high school friends. It’s kinda amazing that I talked my parents into letting me go and that we stayed outta jail. One night we drove up to Crescent Beach IIRC and there was just a massive wall of beer swilling kids at the beach bars. One place had a beer can punch: set a can in it, swing the arm down had you had two good holes punched in a beer can. The bartender ran that thing at a rate you had to see to believe.