Black Oxide Drill Bit Set 1-10mm HSS Coated Bits Rust Resistant Metal Drilling

This high performance drill bit set features a black oxide surface treatment that delivers two important benefits: enhanced rust resistance and improved cutting performance. The black oxide layer provides corrosion protection that keeps the bits looking new and cutting effectively even in humid workshops and coastal environments, while its micro-porous structure helps retain cutting lubricants at the edge, reducing friction and heat during drilling.

Manufactured from quality HSS with a 135-degree split point, the bits start accurately on metal surfaces and maintain sharp edges through extended use. The black oxide finish also reduces glare and improves chip flow compared with bright finishes, making the set a popular choice among professionals who value both durability and performance. Sizes from 1.0 mm to 10.0 mm cover the most frequently used diameters for metal, wood and plastic.

• Black Oxide Treatment: Provides rust resistance and a wear-resistant surface that extends the life of each bit.
• Improved Lubricity: The porous oxide layer holds cutting fluid at the edge, reducing friction and heat buildup.
• 135° Split Point: Self-centering starts prevent walking and deliver accurate holes in metal.
• Durable HSS Construction: Consistent hardness supports dependable cutting performance over time.
• Multi-Material Use: Drills effectively in steel, aluminum, wood and plastic for everyday versatility.
• Organized Case: A labeled plastic case keeps the set protected and easy to use on any job.

This set suits general metalworking, electrical installation, furniture making and maintenance work where reliable performance and corrosion resistance are valued. The black oxide finish is especially beneficial for users in marine, agricultural and outdoor environments where moisture and humidity quickly damage ordinary bright-finish bits. Mechanics, electricians and DIY users will find the set covers their day-to-day drilling needs efficiently.

The combination of rust resistance and sharp cutting geometry also makes the set suitable for tool bags that travel between job sites, where bits are exposed to changing weather conditions. With the correct speed settings, these bits produce clean holes in steel sheet, aluminum profiles, timber and plastic conduit without excessive wear.

Sets are packed in molded plastic cases with clear size markings and shipped in export cartons with protective padding. Custom branding, case colors and size configurations are available for OEM customers. Each production lot is tested for coating adhesion, hardness and drilling performance before release.

Our factory is experienced in producing surface-treated cutting tools for international markets, with strict quality control and dependable delivery. We offer attractive wholesale pricing and flexible payment terms. Contact our sales team for samples, quotations and delivery schedules.