1173-45 Degree 90 Degree Straight Shank Rough Boring Bar Machining Center Lathe Boring Machine Milling Adjustable Bore Boring Bar Reaming Blind Holes45 Degree 90 Degree Straight Shank Rough Boring Bar Machining Center Lathe Boring Machine Milling Adjustable Bore Boring Bar Reaming Blind Holes 1. Easy cutting and loading and unloading Improve the efficiency of product processing, not easy to wear and tear two way screw fixation more stable 2. High cost performance Strong vibration resistance Boring through hole, blind hole, easy loading and unloading, improve efficiency applicable to lathe, milling