3-3/4 x 4-1/2 OD Special Oversized Guide (37592), Large O.

3-3/4 x 4-1/2 OD Special Oversized Guide (37592), Large O.D. to be 8 Long and Squared down to 3-3/4 O.D. per Weatherford Drawing, Made from 4140 Material/RC 18-22 f/ Logan Series 150 Overshot.