Kennametal 1x1x6" Lathe Tool Holder KTGR-163 TNMG 322 160308 Carbide Insert

I believe these take any TNxx 32x 1603xx carbide inserts, such as TNMG TNMP TNMX 322 321 160304 160308 (and many others).

Please see all pictures to judge the condition for yourself.