5/16" 8mm Flexhone Flex-hone ball hone valve guides 240 grit .315"

Description

5/16" 8mm (0.315") Cylinder Head Flex-Hone Silicon Carbide
for all engine valve guide applications utilizing a 0.295" to 0.325" 5/16" valves or  7.5mm to 8.2mm bore.
Brand new sealed in package  engine cylinder head valve guide flex-hone.
This is NOT a brush but a hone with abrasive globules that will produce a controlled finish.
Designed to work with bores from 0.295" to 0.325".
Perfect for materials types, steel, bronze, etc.
Made in USA, by the best cylinder hone manufacturer, FLEX-HONE.
240 grit, EXCELLENT for head and valve guide refinishing.
Tool is self centering self aligning
Can be used with a 3/8" or 1/2" chuck portable drill or drill press
This patented Flex-Hone is the best way to create a Cross Hatch surface finish with suspended globule working abrasives.  MADE IN USA
THIS TOOL HAS THE extra long SHAFT for cylinder head  rebuilding.
ITEM IS BRAND NEW NEVER REMOVED FROM FACTORY PACKING