343-Piece Giant Molecular Model Set, 99 Atoms Science at Home_General Science Supplies 4A single-phase rheostat with cover-protected

4A single-phase rheostat with cover-protected constantan winding on a 200x56mm tube and 4mm safety socket terminals

the lower-friction variant of the metal-bearing bench-clamp pulley in the series

drawing 6V AC for demagnetizing and AC or DC for magnetizing iron bars and strips

Sliding-top wooden box 4 x 2 x 1 inches

a medium-bore option suited to distillation-head connections and other laboratory apparatus that move moderate fluid volumes

343-Piece Giant Molecular Model Set, 99 Atoms Science at Home_General Science Supplies 4A single-phase rheostat with cover-protectedWhole class visible giant molecular model set with 99 atoms 1 2 inches in diameter and 343 total pieces including double bond, turning, and connector links for back of the room demonstrations.