GROOVING / PART-OFF Lathe Tool Holders, Lot #C, Lot of 3. 1 – Kennametal #NGDHR-24 NB8, 1-1/2″x1-1/4″ Shank, includes #SBA8R. 1 – Unbranded #203-231, 1-1/2″x1-1/4″ Shank , includes # 308-121. 1 – Unbranded #203.223, 1-1/4″x1″ Shank, includes #308-115.