Best Hex Drill Bits in 2026

【High Speed Steel tool】- 15mm / 0.59-inch cutting diameter. Cutting Edge Length: 70mm / 2.76-inch;Overall Length: 155mm / 6.1-inch. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance.

【Reduced Shank】- Expanding the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes

【Black Oxide Finish】- Black oxide treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge

【Dimension】- The bit diameter and shank diameter of this twist drill bit is 6.8mm / 0.27-inch, the cutting length is 70mm / 2.76-inch and total length is 105mm / 4.13-inch, Hardness (HRC) is 62-63.

【Material】- Twist Drill is made of high speed steel, high speed steel construction is designed for durability and extended tool life.

【Feature】- Nitrogen Oxidation and Heat Treatment can increase the hardness and corrosion resistant of twist drill bit.

【Parameter】- Drill Bit Diameter: 0.8mm/0.03-inch; Material: HSS, Emery; Surface Treatment: Electroplated Emery; Flute Type: Spiral.

【Material】- Diamond coated high speed steel(HSS) is made by spiral technology, has both toughness and hardness, is not easy to break. The drill bit is sharp, and is easy for chip removal.

【Applicable Machine】- Widely used in rotary tool such as hand drills, drill press, flex shafts, bench drill and hanging mill.

【Dimension】- Bit diameter: 2.9mm / 0.11-inch; Shank diameter: 2.9mm / 0.11-inch; Cutting edge length: 33mm / 1.30-inch; Total Length : 61mm / 2.40-inch.

【Material】- The twist drill is made of M35 high-speed steel, with high wear resistance, toughness and bending strength. And has a surface treatment using grinding and roasted yellow processes. Hardness up to 68.

【Equal Reduced Shank】- Equal reduced shank drill expands the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes.

【Parameter】- Cutting Dia: 14mm / 0.55-inch ; Total Length: 230mm / 9.06-inch; Material: HSS; Shank Type: Hex shank.

【Material】- Drill bit is made of hardened high speed steel, which has durable and stable cutting capacity, and has long time service life. It is harder and tougher to extreme loads,not easy to break.

【Feature】- Hex shank base well fits into majority pistol drill and drill press, more easily and securely installation without slippage and shedding.Hex shank avoid the bit sliding off collet. Broad Blades keep the drill bit straight as it bores.

【Dimension】- The bit diameter of this double end HSS cobalt twist drill bit is 5.2mm / 0.20-inch.

【Material】- Made of high quality HSS material, cobalt high speed steel to ensure the double end drill bits strong, good wear resistance and double life-time compared with other drill bits.

【Advantage】- Double ended sides prolong tool life and increases the amount of service by two before resharpening bit.

【Features】-Total Size: 150mm/5.9-inch(L); Bit Type: Hexagon.

【Material】-This flexible shaft is made of high quality metal which make it practical and durable.

【Durable】-Spring-loaded ball detents lock in to prevent parts from slipping into machinery.Square drive radius corners reduce tool and socket wear.

【Dimension】- The shank diameter of this center drill is 1/2-inch, the working edge diameter is 5mm / 0.21-inch,and the total length is 65mm / 2.56-inch.

【Material and Features】- High Speed Steel, high hardness, rustproof, solid, durable and excellent for use.

【Durable and Resistance】- Center drill bit is made of HSS high speed steel, with extremely sharp blade, low consumption and durable with impact resistance, wear resistance.

【Dimension】- The shank diameter of this center drill is 4mm / 0.16-inch, the bit diameter is 1.5mm / 0.06-inch, the working edge length is 3mm / 0.12-inch, and the total length is 38mm / 1.50-inch.

【Material and Features】- High Speed Steel, high hardness, rustproof, solid, durable and excellent for use.

【Durable and Resistance】- Center drill bit is made of HSS high speed steel, with extremely sharp blade, low consumption and durable with impact resistance, wear resistance.