The left-hand spiral flute supports efficient swarf evacuation
designed for reliable reaming to BS 328/4 specifications
true holes in short-depth bores
stable fit in compatible toolholders and machines
helping you choose the right balance of durability and finish for your application
OSG Stub Drill HSS-E - For Stainless Steels, Steels and Ali - EX-SUS-GDS-5.55mm Stub Drill The left-hand spiral flute supportsOSG Stub Drill HSS E, 5. 55 mm diameter, is engineered for reliable, repeatable holes in stainless steel, general steels, and aluminum. Made from High Speed Steel E (HSS E), this stub drill combines precision and durability to handle challenging metals with consistent results, making it a trusted choice for both professionals and serious DIYers. Precision cut HSSE edge: Delivers clean, accurate holes with minimal burrs and longer edge life, even when