Add to Favorite Sellers. Valve Seat Single Plane Cutting Tools Universal Boring Cutter Valve Repair Tools. Features: 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 Specifications: 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 Includes: 14 x Cutter Blade 11 x Cutter Arbor 2 x Handle 1 x Lever.