6MM Dia HSS Valve Guide Reamer 5" Inch Extra Long - Spiral Flutes Plastic Case Product Specification: 6MM Dia HSS Valve Guide Reamer:- HIGH SPEED STEEL   HELIX 6 FLUTES H 7 TOLERANCE SIZE :-  6mm X 125mm (5" Inch) QTY : 1 PC OPTIMAL FOR HEAD VALVE GUIDE AND INDUSTRIAL USE. For Bronze and Cast Iron Guides  WE ALSO MAKE SOLID CARBIDE VALVE GUIDE REAMER AS PER REQUIREMENTS IN INCH SIZE TOO.