5 HSS Titanium-Coated Step Drill Bits in an Aluminum Case.

Made from high-speed steel (HSS) with a titanium coating for durability and heat resistance. The set includes bits with multiple diameter steps for drilling various hole sizes with a single tool. Suitable for use on materials like sheet metal, steel, plastic, and wood. The two-flute design allows for faster, smoother cutting. The specific size ranges in the set are: 1/4-1-3/8", 3/16-/2", and 3/16-1/2".