Includes  300 mm axles (5 mm dia.) and  each of 60 mm, 50 mm, and 40 mm cardboard wheels.
TechCard and selected mechanical components are available in separate resource packs. These are especially useful for teachers taking a design and make approach to technology or where specific topics are being taught. For example, a teacher wanting pupils to investigate pulleys can purchase a pack of TechCard and a pack of pulleys so pupils can devise models to demonstrate their use. A sheet of notes is included with each pack.