For sale is a very good used BRM Flex Hone for 3.5″ bore, 240 grit, silicon carbide. It is 13.5″ overall length and is BRM part number GB31224. It was only used once on 4-cylinder engine. Comes in original box. Actual pictures are item for sale. Flat rate shipping is for the continental 48 states only. Fast shipping. Buy in confidence.