Nut Spinner

The top is a M10B,  its longer than the DG, also, the internal socket holder on the B is thicker, with thin external, this was changed on the DG 

M-10 Nut Spinner

I don’t have a enough tools to say much about this.  I have 2. Both are marked M-10-DG and are likely newer 

9/16" Drive M10B vs M10DG

Name

Description

Year first Appeared

Year Last Appeared

M-10CA

Nut Spinner (Breaker Bar)

1937

 

M-10B

Nut Spinner (Breaker Bar)

1939

1942

M-10DG

Nut Spinner (Breaker Bar)

common

 

9/16" Drive 25-26 fixed head pull bar- not is cats

1925-1926 fixed head pull bar.  Marked Snap-On, no model number and not listed in any catalog.  Extremely rare.

1925-1926 fixed head pull bar.  Marked Snap-On, no model number and not listed in any catalog.  Extremely rare.