12 Piece Round Aluminium Container Set with Clear Plastic Lids 12 aluminum jars - 1 has 3 inch diameter - 10 have 5/8 inch diameter - 1 has 1-1/4 inch diameter Made of aluminum so the set is lightweight but also strong and durable - weighs .15 lbs total Clear plastic tops so you can view the contents of the jar without opening Smaller jars fit inside the largest jar for compact storage - all come in a shiny silver color These are great for storing gems, stones, diamonds - can even use as lip balm containers