Black gold high speed steel is the long lasting material when it comes to common drill bit materials, not only will the bit's structural integrity withstand tremendous heat and wear, but more importantly black gold bits can drill through tougher materials than common HSS bits. With a 135 degree split-point, these drill bits will catch on the work-surface with greater ease and not wander all over the surface making scratch-marks. This means that after securing the bit in the machine all that is needed is a steady hand to point and apply pressure, and that's it. The 3-Flat shank of our bits means you can use this drill bit with nearly all types of machines. The jobber length is the most commonly used length to diameter standard of drill bit in the US, the length is scaled according to the diameter of the drill head to give maximum force with maximum support so as to keep the bit from bending under the pressure, all the while keeping the machine a comfortable distance from the surface so as not to come in contact and scratch it. Included in the package is 29 pieces. 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2" VALYRIANTOOL 29PCS/Set Pack 1/16" to 1/2" By 1/64" Inch HSS Fully Ground General Purpose Heavy Duty Black Gold Jobber Length 3 Flats Straight Shank Drill Bit Set Twist Drill Bit In Metal Box Drilling Mild Metal, Steel and Alloy, Iron, Cast Iron, Copper..

29PCS in one set. Order now you will get it very quick!

Product Descriptions:

1/16" to 1/2" By 1/64" Inch Size Black Gold Drill Bit, 135 Degree Split Point To Minimize Walk, HSS high speed steel For Higher Heat & Abrasion Resistance, Heavy Duty Web Construction For Strength & Durability, For Tough Metal Drilling, Including Heavy Duty Abrasive, Alloy Metal Drilling On Mild Steel, Cast Iron & Alloy Steel, Packed in metal box with label.

Sizes: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2"

Product Features:

VALYRIANTOOL 29PCS, 1/16" to 1/2" By 1/64" Inch HSS Jobber Black Gold Twist Drill Bits, ideal for drilling on mild steel, copper, Aluminum, Zinc alloy etc.

3 Flats Straight Shank fits most drill chucks.

High Quality Material- High Speed Steel Best Material.

High Efficiency In Drilling Metals, and Mild Steel.

Ideal for drilling in tough metal, including heavy-duty abrasive alloy metal drilling on hardened steel.

135-degree split-point tip starts drilling immediately with less force and eliminates "walking" across the work surface.