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Physics lab block-- the storage box packaging is convenient to take and carry the density block.
Iron density block-- these 3 kinds of density blocks are all in same size with different weight.
Aluminum density block-- this plasic aluminum iron density block set is designed for learning about density.
Scientific metal block-- processing technology, precise size.excellent for physics classrooms.
Metal density block-- designed to be used in an educational setting and are not fabricated using ultra high precision machining.