Safety Ring for 4-1/2 OD, 16.6 - 18.1 # Drill Pipe (Stamped

Safety Ring for 4-1/2 OD, 16.6 - 18.1 # Drill Pipe (Stamped 3-21/32) for use with 3-7/8 Slips and for 4-1/2 OD, 3.750 ID, Washpipe f/ Logan Full Circle Type Releasing Spear. (6720)