18-62mm Valve Seat Cutters Valve Seat Boring Machine. 18-40mm blade rest 2PC. 40-60mm blade rest 1 PC. Grinding Wheel Sleeve 1set. Inner hexagon spanner 2PC. 5.00mm, 5.48mm, 5.98mm, 6.00mm, 6.58mm, 6.97mm, 7.00mm, 7.99mm, 8.03mm, 8.97mm, 9.00mm, 9.43mm, 9.50mm, 11.00mm, 11.97mm, 12.00mm. Blade type:45°-1.2,45°-0.8,55°-1.5,60°-1.2.