Gym dumbbell set with 4-in-1 grip case, designed with an innovative weight adjustment system that completely replaces a set of traditional dumbbells. The use of the innovative disc fastening system allows for very quick and easy load changes during workouts, without clamps, at the push of a button. You can adjust and use each weight separately but also combine them in the special case with the handle, turning them into a kettlebell. Weight range per dumbbell: 1 - 2.5 kg. Total max. kettlebell weight: 5.5kg (includes 0.5kg weight of the case). Dimensions: 29*27.5*10 cm.