GOODSON .341" Valve Guide Finish Reamer - High Speed Steel Tool for Cast Iron Engine Repair | Professional Automotive Machining & Engine Rebuilding

High Speed Steel Valve Guide Finish Reamers are piloted and made of the finest tempered steel. They are designed to provide a fast, quality finish on cast iron valve guides. With proper care, these valve guide reamers will accurately size multiple guides without losing their efficient cutting action. We recommend operating these reamers at 400 to 500 RPM without reaming oil on cast iron valve guides for best results. The piloted area is .012" smaller than the finish diameter. Always wear eye protection when using this tool.