4.50 OD, 2250/2500, FLAT CENTER DRILLED TUNGSTEN

4.50 OD, 2250/2500, KERR FLAT CENTER DRILLED TUNGSTEN

4.50 OD, 1018, Y-BLOCK, GD STYLE

4.50 OD, 1018, Y-BLOCK, FT STYLE

5.00 OD, DESTINY™, FLAT CENTER DRILLED

5.00 OD, DESTINY™, FLAT CENTER DRILLED TUNGSTEN

5.00 OD, 65/45/12, Y-BLOCK

5.50 OD, 2250/2500, FLAT CENTER DRILLED