Drill America HSS Reduced-Shank Drill Bit Set — 5-Piece 9/16"-1", Black & Gold, 135° Split Point

Drill America’s 5-piece reduced-shank set delivers large-diameter high-speed steel bits (9/16"–1") with a black-and-gold finish and 135° split points for accurate, hard-metal drilling.

This compact pouch holds five precision-ground bits with 1/2" reduced shanks so they fit most portable drill chucks while extending your size capacity. Each bit is made from premium high-speed steel, surface treated in black and gold for added wear resistance and improved performance in stainless and other tough metals. The 135° heavy-duty split point reduces walking and cuts required thrust, while common flute and overall lengths mean quick tool swaps and consistent hole depths.

How do these bits perform in hard metals like stainless steel?

The black-and-gold surface treatment improves heat resistance and helps the HSS substrate hold an edge when cutting harder alloys. The split-point geometry prevents the bit from wandering at start-up, producing cleaner holes with less rework. Expect good wear resistance for general shop and field use, not specialized carbide performance.

• Black-and-gold finish for improved friction and heat management
• 135° split point for self-centering and reduced walking
• Precision ground for concentricity and consistent hole quality

Will these drill bits fit my handheld drill or drill press?

Yes—each bit comes with a 1/2" reduced shank so larger diameters fit standard chucks without an adapter. The common overall length and flute length keep bit projection consistent between sizes, simplifying depth control and tool changes. For very high-torque or precision applications a keyed chuck or drill press may still be preferable.

• 1/2" reduced shanks fit most portable drill chucks
• Common flute/overall lengths minimize adjustments between sizes
• Set covers 9/16", 5/8", 3/4", 7/8", 1" sizes for large-hole tasks

What cutting characteristics and chip evacuation can I expect?

The right-hand spiral flutes push chips up and out of the hole as you drill, reducing clogging and heat build-up when cutting metals. Flute geometry and HSS construction balance chip control with durability for general-purpose metalworking. Use appropriate speeds and lubrication for best hole finish and tool life.

• Spiral flutes designed for efficient chip removal
• HSS material offers a balance of hardness and toughness
• Recommended to use cutting fluid on stainless and hard alloys

Who this set is for: This Drill America 5-piece set is made for mechanics, fabricators, maintenance pros and serious DIYers who need to drill larger holes in metal without switching to carbide. It’s ideal when you need to expand a drill’s size range quickly, keep common bit lengths across sizes, and maintain accuracy with self-centering split points. Choose this pouch-equipped set if you want durable HSS performance, reliable chip evacuation, and the convenience of reduced shanks for portable drills.