Heller Is A World-Renowned German Engineering Specialist Dating Back To 1586. They Apply The Most Cutting-Edge Methods At Their Research Centre And In Production In Dinklage, Germany, To Manufacture The Highest Quality Drill Bits. HSS Cobalt Stainless Steel Drill Bit Sets. Please Choose Required Set From The Dropdown Box Above. 2mm, 3mm, 4mm, 5mm, 6mm & 8mm Drill Bits. 1mm – 10mm Drill Bits In 0.5mm Increments. 1mm – 13mm Drill Bits In 0.5mm Increments. Unbeatable In High-Alloy Steel & Stainless Steel. Special HSS Steel With 5% Cobalt. For Extremely Long Life. Thanks To Split Point Grinding & 135° Point Angle. As Per DIN 338 RN. As Per DIN 1414. Not Recommended For The Job, Will Drastically Reduce Bit Life. Will Do The Job, However There May Be A Product More Suitable. Perfect For The Job. Properties & Safety Certificates. Faster Cutting Speeds Than Lower Angle Bits With No Quality Loss. Straight / Cylindrical Shank. Can Be Held In Standard Drill Chuck. GET IT FAST – Same Day Dispatch On All Items (Mon-Fri). Northern Ireland, Highlands & Islands Customers. AB31-AB38, AB40-AB56, BT (Northern Ireland) GY, HS, IM (Isle Of Man) IV1-IV28, IV30-IV32, IV36-IV49, IV51-IV56, IV63, KA27-KA28. KW1-KW17, PA20-PA38, PA41-PA49, PA60-PA78, PH4-PH44, PH49-PH50, PO (Isle Of Wight) TR (Isles Of Scilly) ZE (Channel Isles). HellerSheetMetal HellerNonFerrousMetal HellerSteel HellerStainlessSteel HellerIron HellerCastIron.