Plastic Tri-Grip Dumbbell Set 20 kgThe Plastic Dumbbell Set 20 kg in Detail Challenge your arms and shoulders with this dumbbell set. You can also train your upper back and abdomen with the right exercises. Safety is a particular focus with this dumbbell set thanks to the plastic coating, injuries or blisters on your hands are a thing of the past. Detailed Facts About the Dumbbell Set 20 kg 4 x 1. 25 kg weight plates: diameter 18. 5 cm, height 19. 1 cm, thickness 3. 4 cm 4 x 2. 5 kg