If you're an American Ninja Warrior athlete or training to become one, the Atomik pull-up ball line is a necessity. These 3.5" climbing balls are a good beginner-level workout device; they're easier to hold on to than the larger spherical balls, so they're excellent for athletes just beginning to build forearm strength. Their shape and ability to rotate make these pull-up balls easier on your tendons and shoulders.

In order to hang your Balls, we recommend using our 

• 3-1/2" inches in diameter
• Allows full shoulder rotation
• Beginner level
• Perfect for Ninja Warrior, parkour, gymnastics, and climbing athletes
• Premium 3/8" Stainless Steel Bolts