Best Long Length Drill Bits Under $100 (2026)
We ranked options under $100 by value score using material, length, tip design, user ratings, and versatility for concrete or metal drilling
Top Picks
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1
Extension concrete drill bit 39" cross-type carbide for masonry
Extension drill bit, 39-inch total length with cross-type carbide cutter for concrete, brick, cement walls and stone. Customers note good cutting speed and value, with mixed durability feedback
- 39-inch extension length
- cross-type carbide cutter
- compatible with hammer drills
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2
Extension Concrete Drill Bit 30in with carbide head
Extension concrete drill bit, 30-inch length with cross-type carbide cutter for fast drilling in concrete, brick, cement walls, and stone. Customers note solid build and efficient cutting performance, with some concerns about durability under heavy use
- 30-inch extension for reach
- carbide alloy cutter for efficiency
- double-thread ripple design for speed
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3
Extension Concrete Drill Bit 30in Cross-Type Carbide
Extension drill bit with 30-inch total length and cross-type carbide cutter for concrete, brick, cement walls, stone. Noted for faster drilling and durability in hammer drills
- 30-inch extension length
- carbide cross cutter design
- high-strength alloy steel
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4
Extension concrete drill bit 39" cross-type carbide
Long extension drill bit for concrete and masonry with a cross-type carbide cutter. Designed for faster drilling in concrete, brick, cement walls, and stone. Users report solid build and good cutting speed, with mixed durability feedback
- 39-inch total length
- Cross-type carbide cutter
- High-strength alloy steel
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5
Milwaukee RED Helix Cobalt Drill Bit Set, 23-PC
Durable cobalt drill bit set for metal and wood projects. Includes 23 pieces with RED Helix design for efficient drilling. Customers report high quality with mixed durability feedback
- 23-piece cobalt drill bit set
- RED Helix design
- quality-focused feedback