3-7/8 x 4-1/2 O.D. Special Oversized Guide (21307), with L

3-7/8 x 4-1/2 O.D. Special Oversized Guide (21307), with Large O.D. 8 Long and Squared down to 3-7/8 O.D. per Weatherford Drawing, Made from 4140 Material/RC 18-22 f/ Logan Series 150 Overshot.