Best Hex Bone Drill Bits in 2026

Specs: Diameter 7/8", Length 3-1/2", Rotation RH, Shank 3/8"

Razor sharp serrated edge for fast and flawless cutting

Quality Forged Construction for extended life

HSS Titanium Coating - Classic HSS construction with titanium coating for capability and durability. The cutting edge is hardened and honed for sharpness, chatter-free design with staggered cutting teeth ensure the precise countersinking and hole smooth clean.

Flutes Form - 2 flutes form helps clear chips and debris away from the bit, decreasing friction and heat for a faster, cooler drilling process.

Quick Change - 1/4 inch hex shank fits into all power tools more easily and securely, specially for locking into quick change chuck.

Premium Material: Manufactured from high speed steel for strength and durability

Storage: Supplied in a plastic storage box for easy storage and transportation

Widely USED: The 135° fast cutting point is automatically centered and penetrates quickly with less pressure,The drill kit meets all your requirements, including all common size specifications for Ideal Drilling in Wood/Cast Iron/Aluminum Alloy/Plastic/Fiberglass

Bright finish: Classic M2 High Speed Steel construction with Bright Finish for proven capability and durability.

Strength & Hardness: Made with HSS M2 steel, Rock wall Hardness Level HRC 62-63.

Package & Size: 12 Pieces in a plastic bag, Diameter 3/16 inch, Total length 3-1/2 inch, Working length 2-5/16 inch.

[M2 HSS]: Cuts A LOT MORE CLEAN holes and much EASIER than average step bits. In general, M2 has 50% more Tungsten and 150% more Molybdenum, both of which are key elements in improving the durability. Our additional Vacuum heat treatment and Nitride surface hardening treatment make the performance even better.

[Non-stop]: Our Polished Steps and Size Highlights make it possible for you to see target hole size during drilling. No need to stop in the middle of the drilling to check. Save you time and hassle.

[Easy & Fast]: With our high-accuracy CNC processing and several optimized design details over the years, our design cuts EASY, FAST and CLEAN, outperforming the average ones on the market. Comes with Quick change 1/4 inch hex shank for quick bit switches and compatible with impact ready power tools.

Safe material: PCB drill bits are made of quality tungsten steel, not easy to wear and bend; The anti-vibration design of the blade makes it stable and reliable during the engraving process

Improve precision: micro drill bits set adopts pointed cutting edges; The spiral cutting edge can reduce the cutting force, prevent the drill from breaking, and improve the machining precision, no burrs or debris

Size information: PCB drill bit set contains various sizes of drill diameter, 0.3 mm/ 0.012 inch, 0.4 mm/ 0.016 inch, 0.5 mm/ 0.020 inch, 0.6 mm/ 0.024 inch, 0.7 mm/ 0.028 inch, 0.8 mm/ 0.032 inch, 0.9 mm/ 0.035 inch, 1 mm/ 0.039 inch, 1.1 mm/ 0.043 inch, 1.2 mm/ 0.047 inch, each size has 3 pieces, totally 30 pieces in 3 boxes

Specification: Drill Bit Diameter: 1.1mm / 0.04-inch, Flute Length: 50mm / 1.97-inch, Shank Diameter: 1.1mm / 0.04-inch, Total Length: 80mm / 3.15-inch; 5 x Mini Drill Bits

High Speed Steel: Made of high-speed steel, with high hardness, heat resistance, wear resistance, durability and long service life.

Extended Drill：The jobber extended drill is suitable for a wide range of applications, allowing you to access hard-to-reach areas where ordinary drills cannot. High hardness, sharp twist drill bits will make drilling easier and more efficient.

Diameter 6mm 1/4 Inch,diamond length 8mm,Quick-fit Hex Shank,fit a variety of quick-change chucks.

Multi-purpose for drilling of hard materials especially tiles, porcelain, granite, ceramic, glass, mirror, marble, stone, masonry, brick (not for wood)

Wax are inserted to the diamond drill bit for cooling and lubrication without adding water. Designed with hole and groove in the side of drill bit for removing stone chips.