Machine Tool Fixture Quick Change Tool Post for Lathe 251-111 250-101 /102/ 104/ 107/ 110 250-101A2. The quick change tool post is a main accessory of the machine tool, it is consist of tool post and many kinds of tool holders, according to the processing requirements of the workpieces. Correspording tool holders are selected to finish cylindrical facing. Whole set includes one each of: (053151) 250-111 Quick Change Tool Post 250-101 Turning And Facing Holder 250-102 Turning Boring And Facing Holder 250-104 Heavy Duty Boring Bar Holder 250-107 Universal Parting Blade Tool Holder ...