Grizzly H5939 R-8 Boring Head Set, 18-Piece
2 facing tools with 3/16" square HSS cutting tools; Stand included. 2" boring head with 7/8"-20 mounting threads. 9 carbide tipped boring bars with 1/2" shanks. Dial graduated in .001". .050" per revolution/.025" actual motion. R-8 shank with 7/16"-20 mounting threads for drawbar,2" boring head with 7/8"-20 mounting threads,9 carbide tipped boring bars with 1/2" shanks.