Drill-Bit-Set-21pc-Titanium-Coated-Metric-Sealey-AK473M-High-quality-HSS-Titanium-coated-drill-bits-designed-to-reduce-friction-&-heat-Quicker-swarf-clearance-from-the-cutting-edge-produces-a-superior-quality-of-finish-compared-to-normal-HSS-drills-Ideal-for-use-on-stainless-steel-copper-&-high-carbon-steels-Supplied-in-carry-case-Drill-Bit-Set-21pc-Titanium-Coated-Metric