BMedium Atomik Bombs 3.5 Inch Ball | Climbing Holds | Blue ReviewbP PP Medium Atomik Bombs 3.5 Inch Ball | Climbing Holds | Blue PComes in Blue.PSafe, open-hand design so tendons lay ergonomically.PSpherical shape increases forearm and grip strength, boosting endurance.PSwitch from pull-up, to chin-up, to biceps-pull without regrouping.PMedium (3.5") Bombs come with black powder coated eye bolts.