Part Number: 16-0574 UOM: 1 - EA Summary:4-1/4" cylinder flex hone tool is desinged for bore diameters from 3-1/4" thru 4-5/8" and has a 13-1/2" overall length. This flex hone tool is used to finish and deglaze block cylinders or liners. Fitment: All models Country of Origin: USA