I picked these tools with a lot I can not find any info on them. One is marked Snap-on
What you have are various sizes and shapes of socket type Pin Spanners. These are needed to remove and install flat plugs with recessed holes. An example is shown below. This is in the sump of a Laycock de Normanville overdrive unit. Hope this helps. Bill
Why are some of the pins shorter or longer
For use in different plugs, different applications.
Thank You Bill