Made in the USA, no other mark

[coolford]

These are both heavy duty wrenches, the shaft is 7/8" in diameter and other than a 3/4" difference in length are the same.  Each has a formed 1" hex socket at one end and a 1"hex plug at the other end.  One is 10 3/4" long and the other 11 1/2".  The plug can be put into the socket of the other to make a longer wrench.  They were given to me by a member of our car club.  Any idea who made them and what they were used on.

[Northwoods]

So, are they a sort of 3/4" offset extensions, then?

[jimwrench]

 John Deere flywheel wrenchs

[coolford]

Thanks jimwrench, as I'm not into tractor wrenches I appreciate the input.  Why would one be slightly shorter than the other?

[Bill Houghton]

Thanks jimwrench, as I'm not into tractor wrenches I appreciate the input.  Why would one be slightly shorter than the other?

Because the other one's longer?

No, got nothing useful.

[Yadda]

Thanks jimwrench, as I'm not into tractor wrenches I appreciate the input.  Why would one be slightly shorter than the other?

Because the other one's longer?

No, got nothing useful.

Steroids?  I'm with Bill.

[mvwcnews]

Thanks jimwrench, as I'm not into tractor wrenches I appreciate the input.  Why would one be slightly shorter than the other?

Different clearances on different engine sizes -- overall design is the same, but the sizes & spaces end up different.  Go to a "green power" John Deere show some time & see how the two cylinder engine evolved from the WWI vintage Waterloo Boy through the last two cylinders made in the 1950s.