osg4dSuperior point strength with low cutting force is achieved to accommodate a wide range of carbide drilling application. This drill series is coated with OSG’s EgiAs coating, which is constructedOSG4D PMB UNIQHBA Jalan H. Badaruddin Desa Bagu Kecamatan Peringgarat Kabupaten Lombok Tengah Nusatenggara Barat Phone:+6282341771311 Email: pmb@