Ready to build a caterpiller tread drive for your next robot? Here's a
package that makes the job easy. It includes a pair of GM2 gear motors,
two GMTI idlers, two GMTC driver cogs (keyed to fit the GM2/3/8/9), and forty
GMT links and pins sets (20 per side).
Get the set, and save more than 20% over buying the parts individually!
Also note: The cogs have an extremely tight fit on the GM8 & GM9. You may
find filing the gear motor output shaft down a wee bit a huge help to mounting
the cogs.