128 x 90987 K'NEX Chain link Large 32mm
4 x 90985 K'NEX Gear medium Red
4 x 90900 K'NEX Interlocking clip Tan
As used in many larger K'NEX sets, such as the huge K'NEX Ball run.
The chain links in the pack can be joined to make a chain which is 2 metres (78 inches) long. 20% discount
View Handy Hint G3
to see how the chain should be attached to the gears.