2 inch Boring Head 9pcs R8 Shank 1/2 inch Carbide Boring Bar Milling Set

Center distance bt 2 bottom hole: 0.60" 2" boring head with r8 shank. head size: 2". boring bar hole: 1/2" Cross hole dia: 1/2"， maximum offset: 5/8"， thread: 1.5"-18， graduations: 0.001/0-50 A micrometer lead screw provides 0.0001" direct reading accuracy and ease of adjusting Packing including：1pcs 2" boring head, 1pcs r8 shank, 9pcs 1/2" carbide boring bar,3pcs allen wrench