3.00 OD, TWIN PUMPER, SQUARE HOLE

3.00 OD, TWIN PUMPER, SQUARE HOLE，TUNGSTEN

3.25 OD, TWIN PUMPER, SQUARE HOLE

3.25 OD, MSI HYBRID, SQUARE HYBRID

3.50 OD, MSI HYBRID, SQUARE HYBRID

3.75 OD, 2250/2500, FLAT CENTER DRILLED

4.00 OD, TWIN PUMPER, SQUARE HOLE, TUNGSTEN

4.00 OD, CAT 3000, FLAT CENTER DRILLED