Up for sale is a nice used Flex-Hone 4-1/2" Engine Cylinder Hone. The Hone abrasive surface area is aprox 6" long.
FLEX-HONE Dingleberry for 11/32 in./9.0mm Valves Guides 120-grit
FLEX-HONE Dingleberry for 3/8 in./10.0mm Valves Guides 120-grit
32 mm - 88 mm Wide Car Engine Brake Cylinder Honing Tool Hone Flex Shaft Bore
Hall Mfg Vintage Cylinder Bore Hone Model H Large Made in USA
Sealey Cylinder Hone Stone Set 3 x 1-1/8" Fine Cylinder Hone Tool VS0222