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VALYRIANTOOL COBALT BLACK GOLD 1/2" REDUCED SHANK DRILL BIT
VALYRIANTOOL S&D Black Gold cobalt drill bits are designed for extreme durability and long life. A specially designed parabolic flute form clears chips fast, while the straight shank fits most drill chucks. The 135 degree split point tip delivers a precision start and prevents walking for fast, accurate holes. Effective for drilling on curved surfaces, VALYRIANTOOL Black gold bits require less effort to drill through stainless metal, wood and PVC, and are highly recommended for use with portable drills.
135° SPLIT POINT | EASY CUT & NO SKIP
3-FLAT 1/2" REDUCED SHANK | ANTI-SLIPPING & FITS MOST DRILL CHUCKS
UPGRATED SURFACE TREATMENT | BLACK GOLD COATING PROVIDES LUBRICITY AND RESISTS CORROSION OF THE BIT
REAL HSSCO COBALT MATERIAL | STRENGTHENED HARDNESS & TOUGHNESS
WORKSHOP TEST
Richard W.
Reviewed in the United States on March 4, 2025
Quality Buy
Luis b.
Reviewed in Mexico on March 4, 2025
En acero duro pronto se acaba el filo
Gregory M. Spitzer
Reviewed in the United States on March 21, 2025
I used these to drill a hole in the front of my John Deere tractor bucket so that I could mount a trailer ball. That way I can use the tractor to move trailers back and forth around my yard. The metal I was drilling through is about an inch thick. I had already drilled a 1/2 inch hole, so I was going to enlarge the hole for the ball I needed to insert was 3/4. It was slow drilling with the first one of these bits I used. I finally gave up and started in with a second one of these bits and was able to get through it. I was using oil on both the bit and the hole I was drilling. It is done, but was not easy.
Captain Mike
Reviewed in the United States on March 1, 2025
Good bits… especially for price
Watts Shop
Reviewed in the United States on September 16, 2024
These bits work as well as a good USA bit but at a fraction of the price.If you do mean stuff to metal, a nothing beats fresh drills.With these I don't hesitate to grab a fresh one.Highly recommended.
Margaret
Reviewed in the United States on June 29, 2024
I was drilling through a school bus bumper aprox 1/4 inch steel. It performed beautifully. I touch up sharpened it every hole but one bit cut 4 holes perfectly with just a light sharpening. I definitely recommend these.
Bear
Reviewed in the United States on November 29, 2024
Used for making holes in 3/16 steel sheet. Used bit at low speed, oil, and 5/16 pilot hole. Cut 50 holes and the bit still has sharp edges and a sharp point. Took approximately 15 seconds per hole with this bit using a drill press. Two unused bits remain in the three bit package. I don't know how the smaller bits will fair but, I recommend the 5/8 size with a drill press.
Wes Shelden
Reviewed in the United States on November 19, 2024
Good price on pack of three standard bits. Good quality in hard size to find locally. Used to drill 2"×2" square tube's to make receiver mounts for vice and winch. Worked well.
Ray J.
Reviewed in the United States on October 22, 2024
I have used many drill bit brands over my 30 year career in fabrication. These stood up nicely. I drilled 20 holes in 1/4" steel flat bar. I used a Cordless drill with a 1/4" pilot hole. I never touched the bit and used no cutting oil. I ordered the 3 pack because I was not sure they would hold up but still have 2 brand new bits for another project.
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