Real Coal Specimen with Cotton Bag, Large Lump Included_Rod & Base Rod-mounted plastic ball-bearing pulley with

Rod-mounted plastic ball-bearing pulley with a 50mm wheel on a 150 by 10mm rod

the heaviest metal option alongside brass

Five removable sections separate the enlarged ear into outer

Seventeen-material solids kit with two pieces of each substance in mixed sizes

Larger-bore standard-taper joint pairs with an angled bend to route condensate downstream into the receiving flask during preparative organic chemistry

Real Coal Specimen with Cotton Bag, Large Lump Included_Rod & Base Rod-mounted plastic ball-bearing pulley withPart novelty gift and part geology specimen, this single large lump of genuine American coal ships in a cotton drawstring bag with a linked science experiment activity.