Fitness enthusiasts and climbers, these grip balls are seriously challenging but so effective for building hand and forearm strength! Each ball is about 2.8 inches in diameter with a textured non-slip PU surface that gives you solid grip even when your hands get sweaty. They come with stainless steel hooks and nylon straps that attach easily to pull-up bars, cable machines, or anywhere you can hang them. The open-hand design is great because it trains your grip in a more natural position than traditional bars, working different muscles in your hands and forearms. Whether you're into rock climbing, ninja warrior training, or just want to improve your grip for weightlifting, these balls take your training to the next level. They're perfect for adding variety to pull-ups, dead hangs, or even kettlebell exercises. The quality feels solid - the stainless steel hardware won't rust, and the balls can handle serious use. If you've hit a plateau in your grip strength or want to prevent injuries by strengthening those supporting muscles, these grip balls deliver results. Your forearms will be burning in the best way possible!