I have a couple what I believe are older extensions. The 1st is a 6" 1/4" inch drive made by Snap-on. The 2nd is a 2 1/2" 1/4" drive. The problem is they do not fit a 1/4 inch drive. The female end is to big for a 1/4"m to fit snug. The male end is to big to fit in the 1/4 female. They do however fit into each other. No they are not 3/8" drive. The 2nd one has some markings that I have never seen. I have pictured attached. Can someone educate me on what drive these are and their origins?