Set of 10 slotted weights. Iron with nickel plating. Range 10g*10. Includes weight hanger with hook at the top. Can be used in combination with pulleys or experiment with Hooke’s Law by adding them to springs (all sold separately). The combination of slotted weights and weight hanger allows a student to quickly create any desired amount of weight, or mass. To be used in experiments involving force, acceleration and mass. There are also many other experiments in other fields where a variable handing mass comes in handy- it’s a terrific open ended resource for the classroom or science lab. Ideal for a learning curriculum involving STEM and STEAM based exploration.