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Three cobalt step drill bits with gold TiAlN coating and hex shanks in a compact case

VEVOR

VEVOR Step Drill Bit Set 3pc 1/8-7/8in TiAlN Cobalt HSS Hex Shank

SKU CH-TDNV-RBMHZ

Three cobalt high-speed steel step bits with TiAlN coating and 1/4-inch hex shanks drill clean holes from 1/8 to 7/8 inch in metal, wood and plastic

  • TypeOther Appliances
  • Width4.13
  • Three cobalt HSS bits cover 1/8 to 7/8 inch drilling needs
  • TiAlN coating keeps edges sharp through stainless steel and hard metals
  • 118° tip with four-flute spiral clears chips fast and reduces heat
  • 1/4 inch hex shank locks into any standard drill chuck instantly
  • Compact 4.65 x 3.94 x 1.38 inch case stores all three bits neatly

Three-Piece Cobalt Step Bit Set

This set contains three cobalt high-speed steel step drill bits with TiAlN coating. The bits cover 13-step, 9-step and 12-step ranges from 1/8 inch up to 7/8 inch. They are built for drilling metal, stainless steel, aluminium, wood, plastic and fibreglass. The 118-degree tip and four-flute spiral design clear chips quickly and reduce heat.

Check Drill Compatibility

Verify that your drill accepts a 1/4 inch hex shank for secure quick-change fitting. Confirm the material thickness suits the maximum 7/8 inch diameter of the largest bit. The set weighs 0.50 lbs and measures 4.65 x 3.94 x 1.38 inches, so ensure your storage space accommodates it.

Replaces Single-Size Bits

This kit replaces multiple individual drill bits by covering hole sizes from 1/8 inch to 7/8 inch in three tools. The jump is worth it when you regularly drill progressive diameters in sheet metal, enclosures or mixed materials and want fewer bit changes. It is not for buyers who need larger diameters or non-hex shank formats.

Highlights

  • Three cobalt HSS bits cover 1/8 to 7/8 inch drilling needs
  • TiAlN coating keeps edges sharp through stainless steel and hard metals
  • 118° tip with four-flute spiral clears chips fast and reduces heat
  • 1/4 inch hex shank locks into any standard drill chuck instantly
  • Compact 4.65 x 3.94 x 1.38 inch case stores all three bits neatly

Specifications

TypeOther Appliances
Width4.13

Questions about this item

What comes in the box and is anything else needed to start drilling?

The package contains three step drill bits: a 13-step bit covering 1/8 to 1/2 inch, a 9-step bit covering 1/4 to 3/4 inch, and a 12-step bit covering 3/16 to 7/8 inch. The 1/4 inch hex shank fits standard drill chucks directly, so no extra accessories are required.

Which bit should I choose for a specific hole size?

Use the 13-step bit for holes between 1/8 and 1/2 inch, the 9-step bit for 1/4 to 3/4 inch, and the 12-step bit for 3/16 to 7/8 inch. Each bit is marked with its step diameters so you can stop at the exact size needed.

How does the 118-degree tip and four-flute design perform in stainless steel?

The 118-degree tip and four-flute spiral clear chips quickly and reduce heat, keeping the M35 cobalt high-speed steel with TiAlN coating sharp for clean, burr-free holes in stainless steel and other tough metals.

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