Loop, Compatible Threader Grainger Part Number 6YJ38, Compatible Threader Manufacturer Part Number 36620, Compatible Threader Series 141 Receding Threader, 161 Receding Threader, 300 Power Drive Front-Mount, 840A Universal Drive Shaft, Product Type Loop, Features Stabilizes Pipe Threading System Under High-Torque Conditions, For Use With Mfr. No. 141/36620