GMTOOLS 15Pcs Cobalt Drill Bit Set – M35 HSS, 135° Split Point, Jobber Length, Storage Case 1/16"-3/8"

GMTOOLS 15Pcs Cobalt Drill Bit Set

This 15-piece kit is engineered for dependable performance across metal, wood, and plastics. Crafted from industry-grade M35 high-speed steel with a 5% cobalt addition, these bits aim to deliver consistent heat resistance, wear protection, and longer tool life in real-world tasks. The result is a reliable option for DIY projects, hobbyist workshops, and professional workspaces where steady cutting action matters.

Key benefits at a glance

• 135° split point tip: centers automatically, reduces walking, and clears chips quickly for cleaner starts.
• Gold oxide finish with round shanks and fully ground spiral grooves for precision and smooth cutting motion.
• Versatile range: designed to drill hardened metals, stainless steel, cast iron, as well as wood, aluminum, and plastics.
• Complete set includes 15 bits in common sizes (1/16" to 3/8"), organized in an indexed storage case for easy pickup and return.

Real-world use cases

In a home workshop or craft space, these bits shine during metal fabrication, auto repairs, or hobbyist projects that involve metal sheets, brackets, or fasteners. The combination of cobalt-enhanced steel and a precise point helps maintain steady feed pressure, while the durable finish provides resilience against heat and wear during longer drilling sessions.

For woodworking or plastic work, the set offers a dependable option when a clean start is needed to minimize wandering and ensure accurate hole placement. While not a guarantee of results, users often notice smoother chip flow and reduced friction compared to standard bits in similar sizes.

What’s included and how it helps

• Sizes cover a broad spectrum: 1/16" (2 pcs), 5/64" (1), 3/32" (2), 7/64" (1), 1/8" (2), 9/64" (1), 5/32" (1), 3/16" (1), 7/32" (1), 1/4" (1), 5/16" (1), and 3/8" (1).
• Jobber length bits offer versatility for depth control and reach in various setups.
• Indexed storage case keeps sizes organized, reducing search time on busy workbenches.

Material, finish, and care

The M35 cobalt-enhanced HSS construction balances heat resistance and wear protection, making these bits a practical choice for mixed-material projects. To extend life, use a steady cutting pace, lubricate where appropriate, and avoid forcing bits through unusually tough materials.

Warranty and support: GMTOOLS backs this set with a 30-day money-back guarantee and a 100% satisfaction promise for risk-free shopping. If you have questions or concerns, reach out and expect prompt attention.