OSG Jobber Drill HSS-E - For Stainless Steels, Steels and Ali - EX-SUS-GDR-12mm Die & Mould Collet Chucks while the left-hand spiral flute

while the left-hand spiral flute design aids chip clearance in longer bores

and a 30° helix delivers clean corners

The JBO Thread Ring Gauge (NoGo) is a precision inspection tool designed to verify external UNF threads on fasteners and machined components

interchangeable hole sizes that align with standard specifications

MT7 shank with Sub-Micron carbide: High-hardness

OSG Jobber Drill HSS-E - For Stainless Steels, Steels and Ali - EX-SUS-GDR-12mm Die & Mould Collet Chucks while the left-hand spiral fluteThe 12 mm OSG Jobber Drill HSS E is a precision drill bit designed for metalworking tasks that demand reliability and clean, accurate holes. Made from High Speed Steel E (HSS E), it powers through stainless steel, general steels, and aluminum with consistent results. Its a dependable choice for professionals, technicians, and serious hobbyists who need a single bit that performs across common materials. With a jobber length design and optimized