The UNRVLD Medium Bore Ball Hone Kit covers the practical 16, 18 and 20 mm sizes in a 320-grit silicon-carbide finish.
 
Designed for workshop repair work involving small hydraulic bores, calipers, master cylinders, slave cylinders and similar applications. The flexible abrasive-ball design follows the bore to help remove light glazing and restore an even crosshatch pattern.
 
Features:
Includes: 16, 18 and 20 mm 320-grit hones.
300 mm overall length.
 
 
Ball hones are intended for light deglazing and surface refreshing only. They are not a substitute for precision boring and honing equipment. Always measure the bore, follow the piston-ring manufacturer’s finish requirements, use suitable honing lubricant, and thoroughly clean the bore before assembly.