(2) Proto Professional Hex Allen Bit 1/2" drive sockets:

(1)  5441-5/8.

(1)  5441-9/16.

Used:

5/8" is in great condition. Looks like it has never been used.

9/16" has some very light wear marks, but in very good condition.

Both have the previous owners' initials  engraved on sides. "CE".