R8 Boring Tool Set ~ Includes a 2″ Head, an R8 Shank, and a 1/2″ 9 Piece Boring Bar Set ~ The boring head bar holder moves freely and smoothly. ~ The boring head design assures superior rigidity for chatter-free boring and precise hole size accuracy. ~ The boring head has a hardened and ground adjusting screw designed for long lasting and trouble free use. ~ The tool capacity is up to 1/2″. ~ The shank to the head is 7/8″-20. ~ A micrometer lead screw provides 0.001″ direct reading accuracy and makes adjusting easy. ~ 1 DIV = 0.001 which means when turning the dial by 1 division/graduation, the boring head’s travel is 0.001″ in radius movement and 0.002″ in diameter movement. Includes a 2″ Head, an R8 Shank, and a 1/2″ 9 Piece Boring Bar Set The boring head bar holder moves freely and smoothly. The boring head design assures superior rigidity for chatter-free boring and precise hole size accuracy. The boring head has a hardened and ground adjusting screw designed for long lasting and trouble free use. The tool capacity is up to 1/2″.
