F1 weights sets from 1mg - 10 kg. Up to 500 mg leaf weights, mat.: aluminium, density 2.7 g/cm3; leaf weights 1- 5, nickel silver, density 8.7 g/cm3; leaf weights 10 - 500 mg, special steel, non-magnetizable, density 8.0 g/cm3, highly corrosion-resistant, knob weights highly polished, in wooden case Packaging of the weights: up to 20 g in a plastic case; from 50 g and up in a wooden case, from 1 kg, additionally supplied with gloves; service weight set in a plastic carrying case Weight set 1 mg - 1 kg, F1, with DAkkS- Certificate