1/2" 13mm Nikasil Cylinder Flex-Hone lifter 320 Grit AO Brush Research BC12320AO

 1/2" ALUMINUM OXIDE Material Flex-hone great for Nikasil Electrocoated bores

Cylinder Head Hone for all engine valve guide applications utilizing a 0.460" to 0.520"  or  12mm to 13mm bore.

320 GRIT

     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 0.460" to 0.520"

    Perfect for materials types, steel, bronze, etc. 

    The hone labeled as 1/2" but is slightly oversized to apply the required wall force

     Made in USA by the one of the best cylinder hone manufacturers, FLEX-HONE.

     320 grit, EXCELLENT for lifter bore or tube refinishing. 

 This patented Flex-Hone is the best way to create a Cross Hatch surface finish with suspended globule working abrasives. 

THIS TOOL HAS THE extra long SHAFT for cylinder block rebuilding.

working range 0.460"- 0.520",  12mm-13mm Made in USA