3 Stone Piston Brake Cylinder Hone Engine Honing

This cylinder hone makes it easy to hone caliper piston cylinders, using any 3/8 in. Designed to be self-aligning and self-centering to aid in accurate honing. 4" extra long 3 Stones Piston Cylinder Hone 4"/100mm length 12mm width 3pcs 220-grit hone stone.