These adjustable Kettlebells are simply awesome. 8 weights in one Kettlebell system. From 2.5-pound increments for the 20-pound Kettlebell or 5-pound increments for the 40-pound Kettlebell. Select any weight to perform a wide variety of exercises for the total body workout. These Kettlebells replace 8 separate Kettle bells making them space efficient and effective. Great ergonomic handle makes them easy to use for any size hand.