CAT40, Style C, solid, no hole, 2.25 inch overall long, 5/8-11" Thread Made from alloy steel with heat treatment and hardened to HRC 58. Each retention knok is indiridually magnetic particle tested to protect against cracking. All mating surfaces precision ground. For Daewoo, Fryer, Haas, Kia, Kitamura, Miyano, OKK, Okuma & Howa, Roku-Roku, Sharp, Toshiba, Toyoda, YCI, etc.