NOS Sears Craftsman USA 3pc 3/8" Socket Lock Extension Bar Set 43271 Very Rare!

This listing is a partial payment - 3 of 3. 

Brand new, sealed 3/8” drive locking extension set in the original package. This a rare older style locking extension design as indicated by the Socket Lock trademark. Features a metal push button, rather than the plastic buttons seen on the newer designs.

Pretty unique packaging on this one that I haven’t see before. First time I’ve seen the Socket Lock trademark mentioned / advertised on these locking extension sets.

Includes 3”, 6” and 10” locking extensions.