12x Large Carbide Mounted Valve Seat Cutter Set 30 45 70 (20 Degrees) USA. 12x Large Carbide Mounted Valve Seat Cutter. 70°: 1 1/4″, 1 13-16″, 1 3/8. 45°: 1 1/4″, 1 3/16″, 1 5/16″, 1 5/8″, 1 7/16″, 1 1/2″, 1 3/4″, 1 7/8″. (8 pieces) valve guide rod : size 7mm, 8mm, 8.5mm, 9mm, 10mm, 7/16″, 11/32″, 5/16. Cut out hard SEATS. Carbide tipped valve seat cutter set 23x.