AMSUO 21-Piece Drill Bit Set, Black Oxide — 1/16" to 3/8"

AMSUO 21-Piece Drill Bit Set, Black Oxide — 1/16" to 3/8"

The pro 21-piece index at a value price point. Twenty-one black oxide HSS bits from 1/16" to 3/8" — the same coverage as the TIN version, in a corrosion-resistant matte black finish. Factory-direct from a 20-year precision-tools manufacturer with ISO 9001 / 14001 / 45001 triple-system certification.

What's in the Box

Finish: black oxide (matte black flutes). Case: blue with clear cover and yellow organizer, molded labels.

Key Features

• Black oxide finish — cost-effective, corrosion-resistant, prevents chip welding
• Same 21-piece pro index as the TIN version at a value price point
• Long + short two-row layout covers reach and clearance jobs
• Standard fractional sizes throughout
• Display-friendly case with molded size labels

Recommended Applications

• General-purpose drilling in steel, wood and plastic
• Budget-conscious contractor and DIY programs
• Wholesale pricing tier below the TIN-coated index
• Promotional and private-label opportunities

Quality & Certification

Produced in an ISO 9001 / 14001 / 45001 triple-certified facility — every set is inspected before packing.

FAQ

Black oxide vs. titanium — which should I choose?

Black oxide is the value choice for general drilling; titanium offers longer life in steel. Same size coverage in both.

Can this set be private-labeled?

Yes — custom branding, case colors and index layouts are part of our OEM program.

What is the MOQ?

MOQ depends on configuration and packaging; send your target quantity for a factory-direct quotation.

Get a Quotation

Email [email protected] or message us on WhatsApp for wholesale pricing, samples and lead times.