Twice precisely scraping Taiwan original milling head,NSK P4 spindle bearing Spindle tolerance 0.002mm Variable milling head For electric parts, mould and hole, slot and frame processingTwice precisely scraping could assure the quality of processingFit for boring, milling, drilling and boring, tolerance is 0.005-0.012mmTaiwan original milling head, NSK P4 spindle bearingSpindle tolerance 0. ...