When you need precision, this might not be for you. The size they ship is a metric, not a true fraction, so they may vary slightly from your goals. For a club like me, they're mostly fine.
Pros
Different Suitability: M35 HSS Cobalt Drill Set is excellent for hardened materials and hard metals such as cast iron, heat resistant alloys, hard plastics, stainless steel, titanium alloys, wood, etc. as well as for soft materials