Info on a Snap-on M-5 Sliding Bar

[Farleyfan]

I got an older breaker bar n extension at a yard sale this weekend.
I thought it was 1/4 drive but its actually 9/32 square.
Anybody know what this oddball size is ?

 

[Biomed]

I got an older breaker bar n extension at a yard sale this weekend.
I thought it was 1/4 drive but its actually 9/32 square.
Anybody know what this oddball size is ?

You're right. It's 9/32.

A little information is available on Alloy Artifacts here:
Alloy Artifacts

More information here on Collecting Snap-on:
Collecting Snap-on