BB100 Bench Buddy. Impregnated with a special super fine abrasive, Bench Buddy brushes easily remove small burrs and polish the inside of a valve bore with virtually no enlargement of the bore diameter itself. Each Bench Buddy kit features 4 different sized brushes.
Improves the surface finish of a bore by up to 50%
Restore smooth valve operation in seconds
Services bores from 1/4″ to 1″