R8 2 in. Head Boring Tool Set

R8 2 in. Head Boring Tool Set Rugged design allows excellent rigidity for chatter-free boring. Head features a threaded back for use with multiple shanks. Set complete with boring head, boring shank, carbide tipped boring bars & L-shape hex wrenches. Dial on head with 0.001 in. graduation for accurate hole sizing. Fitted durable carrying case included. 5 boring bars. Boring bar hole size is 1/2 in.. 1 DIV = 0.001 which means on the 0-50 dial when turning the dial by 1 division/graduation, the boring head's travel is 0.001 in. in radius movement and 0.002 in. in diameter movement. On the 0-100 dial, the boring head's travel is 0.0005 in. in radius movement, 0.001 in. in diameter movement. Boring head thread is 7/8 in.-20. Offset is 5/8 in.. Crosshole is 1/2 in.. Shank thread is 7/16 in.-20. Minimum bore diameter is 0.300 in.. Maximum bore diameter is 5.700 in.. Maximum bore depth is 2.300 in..