Click to expand Tap to zoom Kpmi Valve Guide Hone, 3/8 Inch (.3125") for Univ. by Kibblew Save £-8.02 £36.72 | / SKU MCS524535 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart DescriptionKPMI VALVE GUIDE HONE, 3/8 INCH (.3125")DetailsFor cast iron, manganese bronze, C630 bronze & Ampco-45 bronze; Used to finish hone to correct toleranceUNIV.