T-handle, star bit tool

[KZ1000J]

Anybody know anything about these?

Has the word "challenge" and the letter 'H" and M stamped on the tools. Possibly specific to a larger machine tool, perhaps?

Anybody?

Thanks!

 

[KZ1000J]

Well, looks like a special tool for Cummings......maybe others.

http://www.ebay.com/itm/Challenge-t...:g:kAgAAOSwzrxUvn03&item=381130325236&vxp=mtr