2" Boring Head 9 Pcs R8 Shank 1/2" Carbide Boring Bar Set Milling Set

2 inch size bore head with R8 shank, 1/2" boring head thread A micrometer lead screw provides 0.0001" direct reading accuracy and ease of adjusting The boring head set is made of high quality steel with great match of hardness and toughness, thus prolongs its service life The boring head set includes a R8 handle, nine 1/2" boring bars, three hex wrenches and a tool box Used for processing inner surface, boring, boring outer circle, boring end face, boring ladder hole, boring end face, cutting hole and outer ring groove, etc