Indexable Boring Tool Set with 3 in. Boring Head, R8 Shank and 8 Boring Bars Boring head features a 1-1/2 in.-18 threaded back so you can change shanks as needed. A micrometer lead screw provides 0.001 in. direct reading accuracy and makes adjusting easy. Boring head offset is 1 in.. Minimum boring diameter is 0.394 in.. Maximum boring diameter is 7.874 in.. Maximum boring depth is 3.150 in.. The crosshole is 3/4 in.. R8 shank has a drawbar end thread of 7/16 in.-20. The included indexable boring bars come with TCMT 21.5 C6 carbide inserts for steel and alloy. The set also comes with torx and l-shape hex wrenches and a fitted carrying case. A micrometer lead screw provides 0.001 in. direct reading accuracy and makes adjusting easy. 1 DIV = 0.001 which means when turning the dial by 1 division/graduation, 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 features a 1-1/2"-18 threaded back so you can change shanks as needed. •A micrometer lead screw provides 0.001" direct reading accuracy and makes adjusting easy. •Boring head offset is 1". •Minimum boring diameter is 0.394". •Maximum boring diameter is 7.874".
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