Set of four (4) replacement gears for Craftsman Planer model #351.217580 part #24786.00. The original four gears are plastic and the key used to the lock the gear to the shaft shears off. These are metal and the problem should never occur again. It's recommended all four are replaced, if one or two are replaced, the others will fail. 

Returns accepted within 30 days, buyer pays return shipping. Please contact me before returning as I will try to resolve any problems. These will only fit the Craftsman model 351.217580.