Motorcycle Valve Seat Reamer Repair Cutter High Quality Durable Tools Parts. Applicable valve diameter: 34-22mm. Grinding Wheels: 34×45 31×45 29×45 27×45 24×45 22×45. Reamers: 34×45 31×45 29×45 27×45 24×45 22×45. Top Chamfer: 34×58 27×58 24×58. Bottom Chamfer: 30×30 26×30 23×30. Toolholder: 5MM, 5.5mm, 6MM.