Real Coal Specimen Set with Cotton Bag, 5-Piece Lab Supplies_Sieves and one 1 kg mass

and one 1 kg mass with a 0

the slim half-disc geometry letting beams enter the curved face along its radius for clean refraction-angle and TIR observations

and contains four simulated blood samples for realistic replication of the blood typing procedure and safe classroom use

using wide-pad threaded metal screws for secure fastening

Longitudinal head-throat-lung cross section reveals the full air pathway from nostrils through trachea to alveoli at half life size for respiratory teaching

Real Coal Specimen Set with Cotton Bag, 5-Piece Lab Supplies_Sieves and one 1 kg massBundled in a cotton drawstring bag with a linked crystal growing activity, this pack of five small lumps of genuine American anthracite coal doubles as novelty and classroom specimen.