Plastic Dumbbell Set 20 kg, 25 mmE Series Dumbbell Set 25 mm Plastic 20 kg for Beginners Whether you are training to get fit again after a long break, to stay fit as you get older or simply to look really good with the E Series dumbbell set 25 mm plastic 20 kg you are always well equipped. The set with its 19 kg of weights and the knurled bar with a dead weight of 1 kg is ideal for beginners or as part of the basic equipment for strength athletes. The plastic casing, which protects