4.00 OD, TWIN PUMPER, SQUARE HOLE, TUNGSTEN

4.00 OD, CAT 3000, FLAT CENTER DRILLED

4.00 OD, 2250/2500, FLAT CENTER DRILLED TUNGSTEN

4.00 OD, SGWS

4.50 OD, TWIN PUMPER, SQUARE HOLE

4.50 OD, TWIN PUMPER, SQUARE HOLE,TUNGSTEN

4.50 OD, CAT 3000, FLAT CENTER DRILLED, TUNGSTEN

4.50 OD, DEMAY, HOLLOW