The Killer Karate Krusher!
We have long been making the case that grip strength is a valuable commodity to all athletes, case in point: The Killer Karate Krusher! If you have ever wanted 'A Bone-Crushing Grip", "Fingers as Tough as Steel", and "A Fist as Tough as a Sledge Hammer" then the 'Killer Karate Krusher' is one to check out. The Killer Karate Krusher is the only exercise which permit full "finger bombing" for an extra-powerful grip -- or at least that's what is said in the ad. Who knows how many of these were ordered from outta the back of comic books?
Demonstrating is IFBB Mr. America, Mr. Universe and Mr. World, Chuck Sipes, who was clearly no stranger to forearm work.