Cast iron weight coming in at 2 kilograms (approximately 4.5 pounds) Weight is approximately 3" in diameter Slot is approximately 1 cm wide, able to fit most balances Perfect for max load and minimum weight testing Useful for measurement, but also pressure and torque experiments This cast iron weight weighs 2 kilograms. It is slotted for use on a hanger, but can also fit in a balance as well. This weight can be used in a classroom to perform measurement experiments and simple physical demonstrations on forces, pressure, and torque.