All product sizes and weights are in the information files
This is the AIR TRACK OPERATION KIT.
It contains a large set of parts for performing all the experiments. The operation kit is the same for both 2m and 2.5m tracks.
It includes 2x long and 2x short gliders, spring buffers, non-spring buffers, various springs, track pulley, loop springs, magnets, weights, inclination blocks with instructions.
It is included in the 2.5m MF0105Z-001 and 2m MF0107Z-001 Complete Air Tracks, but can also be obtained separately.
See PDF file for all details and components.