Marketplace
This 19 Pce Metric INOX Drill Set from Sutton Tools are industrial quality. Elsewhere are selling for $159 at Discount Trader, $139 at Tool King, $123 at Total Tools, and the cheapest comparable $112.89 on ebay
Stock availability
Features
Unique point and stepped core designed for superb penetration and minimal work hardening
Short flute with fast spiral for maximum rigidity & swarf control
Specialised design achieves 70% more life in stainless steel than standard drill bits
Made from M2 High Speed Steel (HSS) offering the best combination of strength, heat & wear resistance
Futura Nano PVD coated tip for ultimate wear resistance
Sutton Tools INOX jobber drills are an industrial quality drilling solution specially designed for superior performance in stainless steel.
Tailored to overcome the difficult-to-machine material properties of stainless steel, INOX drill bits have a fast spiral, short flute and unique stepped core design providing a smooth and effortless cutting action never before seen.
It's a specialist set specifically designed just for stainless/soft metal drilling. The compatibility table says as much, not even listing it as "suitable" for wood, plastic or plasterboard like normal HSS bits are.
For an RRP of $125 I'd be expecting split points.
For $65 you can get a set of HSS Kango drills with some kind of split point design.