For Sale is a an aftermarket spike for McCulloch chainsaws.  This only fits the early 10 series that had the spike holes that are 4-1/8" apart.

The originals were formed, these are flat.  They were developed off the gear drive style spike so the teeth are slightly larger than the original formed type.

They are painted with black paint, the paint chips off easily, so there may be paint chips in the one you receive.

This fits:

McCulloch Pro Mac 10-10 with Points Ignition

McCulloch Mac 10-10 with Points Ignition

McCulloch 7-10A, Super Pro 60, Super Pro 70, Super Pro 80, Super Pro 81 with points ignition

McCulloch Mac 1-10, 2-10, 3-10, 4-10, 5-10, 6-10 with Points Ignition

Check out my store for more parts your McCulloch saw.