Weight set made from stainless steel - contains 4 50g weights and a 50g hanger Weights are slotted to fit and lock on to the hanger Slot is approximately 2mm wide Hanging mass is perfect for balance testing and weight determination Good classroom tool for demonstrations on force and balance This mass set is perfect for labs and demos on force and balance, and can be used to great effect for determining the mass of an object. The set is made completely of stainless steel and contains four 50 gram masses and one 50 gram hanger.