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$19.99 50% OFF $39.98
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  • 😊If you are not satisfied within 40 days, you can return it for free.
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  • 99.3% Reviewers Recommends This Product

Diamond drill bits, hole saw core drill style bit. More than 20 years of experience in the production of glass drill bits, combining advanced technology and scientific achievements, performance.Fine workmanship and super wear-resistant, sharp.


 DIAMOND COATING & NICKEL PLATED: Diamond coating enhances the drilling speed, which makes the bit more sharp. And the nickel plating surface can extend the service life and enhance the surface corrosion resistance.

STABLE & DURABLE: These diamond drill bits made of high quality steel that is durable and have a long sevice life, which are high quality and good performance that excellent for making clean and accurate hole.

SHARP CUTTING: Coated with high quality diamond, the diamond hole saw creates a high precision, smooth cut with no broken edges. Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably.

SIDE DESIGN: With the side flute hole design, the bit can remove the waste to keep the drill bit clean.

SIZE & APPLICATION: They are perfect for drill glass, tile bottles,blocks jars, fiberglass porcelain tile ceramic, slate Mable, granite light stone.


  • Material: High quality steel, Uniform diamond coating
  • Color: Silver
  • Size: 3mm/0.12",  4mm/0.16",, 5mm/0.2",6mm/0.24", 8mm/0.31", 10mm/0.39", 12mm/0.47", 14mm/0.55", 16mm/0.63", 18mm/0.71", 22mm/0.87", 26mm/1.02", 28mm/1.12",30mm/1.18", 32mm/1.26", 34mm/1.36", 38mm/1.52",40mm/1.60", 50mm/2"
  • Cutting Depth: 1/2’’(12.7 mm)
  • Perfect for: Lithium Drill, AC Drill, Hammer Drill, Drill Press and so on.
  • NOTE: It may cause the burning smell, if your speed is too high or the pressure you are applying is too much.


10PCS/15PCS/20PCS *Diamond Drill Bits

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