Description
This is a educational construction kit assembled from various materials (plastic, metal, etc.).
First in Tamiya’s ‘Technicraft’ series, this planetary gear box set allows you to set various gear ratios for spinning your solar system diorama. Included are bits for the following gear ratios: 16:1, 20:1, 25:1, 80:1, 100:1 and 400:1.
