3 inch Precision Boring Head R8 Shank 3/4 inch Carbide Boring Bar Milling Set

Maximum offset 1", graduations: 0.001" Boring Head: Bar holder moves freely and smoothly Hardened and Ground adjusting screw designed for long lasting and trouble free use Design assures superior rigidity for chatter-free boring and precise hole size accuracy Boring head size: 3", boring head height: 3-5/32", shank taper r8, shank to head 1-1/2"~18", tool capacity up to 3/4"