Dia.22-63mm Valve Seat Single Plane Cutting Tools Universal Boring Cutter Description: This product is the valve seat cutter and boring Cutters. Seat cutters are almost standard equipment in any machine shop that services four-stroke engines – whether the work is small engine repair, automotive high performance,routine motorcycle maintenance, or heavy duty engine rebuilding. We believe that our product has been so popular for one simple reason: it offers value. It’s extremely easy to use, is accurate enough to be the tool of choice for high performance engine work, and it doesn’t require a huge investment. Specification:Number of pieces: 28Suitable for: Diameter 22-63mm valveCutter Blade Angle: 15°, 30°, 45°, 55°, 60°, 75°, 90°Tool bar diameter: 5MM, 5.5MM, 6MM, 7MM, 8MM, 9MM, 9.5MM, 10MM, 10.5MM, 11MM, 12MMWeight: 2.5KG Include:16 x Cutter Blade11 x Cutter arbor2 x Handle1 x Lever