Support Arm, Compatible Threader Grainger Part Number 1AC02, Compatible Threader Manufacturer Part Number 41935, 41940, 45178, Compatible Threader Series 700, Product Type Support Arm, Features Cast Iron Construction, Supports Power Drive While Threading, Used to Resist Torque Developed When Threading Pipe Up to 2 in dia, For Use With 1AC02 Power Drive, Includes -