[NO FILLER: Each Kettlebell has a hollow core cast to precisely the correct weight ensuring accuracy compared to other molds. COLOR CODED WEIGHTS: The Competition Style Kettlebell comes in a variety of color-coded weight increments from 8 KG to 32 KG with little fluctuation in diameter maintaining consistency in feel as you move up to higher weights. FREE WEIGHTS FOR STRENGTH TRAINING: Kettlebells allow you to target a wide range of muscle groups giving you a full-body workout. Use these kettlebells to perform swings deadlifts squats get-ups snatches and other athletic or cross-training exercises. DURABLE CONSTRUCTION: Each kettlebell is well-formed balanced and features an easy-to-grip handle for a comfortable and non-slip grip. The finished texture holds chalk well but provides enough texture that chalk is not needed. DIMENSIONS: The 18 KG or 39 LB Kettlebell retains the same 8.3-inch diameter 11.4-inch height and a 35 mm handle thickness allowing you to train the same movement while also increasing or decreasing weight to cater to your routine.]