Making a boxing jab ball with a tennis ball $3 (Rocky movie ver) Elestic jap ball preparation 1.a tennis ball 2.a rubber cord 3.a screwdriver STEP1 .Make a hole with a screwdriver or drill in the tennis ball center. STEP2. Tie the knot twice on the end of the rubber band. Push the rubber band knot into the hole of the tennis ball using a screwdriver. Tie a knot to tie to the head, leaving a rubber band hanging from the tennis ball about an arm length. Making jabball finished in 10 miniate. Now It’s time to be a champion! It’ll take a while, but…. with patience… If you’re moving toward a goal… You are already Champion… Thank you for watching the video.