Valve Seat Single Plane Cutting Tools Universal Boring Cutter Valve Repair Tools. This product is the valve seat cutter and boring cutters The 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. Number of pieces: 28 Suitable for: diameter 22-63mm valve Cutter 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, 12mm Weight: 3.5kg. 14 x Cutter Blade 11 x Cutter Arbor 2 x Handle 1 x Lever. If you are not 100% satisfied, please let us know the Detailed Problem, We will give you a 100% satisfactory solution. You brought wrong size or wrong item. Communication is the best way to solve problem. Our goal is to make sure you are a happy customer and pleasant shopping with us.