Spherical Concave Head Grinding Bit


Gemstone beads add more value to any jewelry design, making each of them unique and stunningly beautiful. Now you can craft your own jewelry and accessories! Create your own beads and gems out of precious stones!

If you are looking for the easiest way to carve and transform your precious stones into the best beads possible, then look no further! We have the perfect tool to help you out!

Effortlessly create perfect spherical gems & precious stones on your own with the Spherical Concave Head Grinding Bit

EXCELLENT RESULT - Start grinding and drilling stones and gems using this tool and create perfectly round precious stone beads instantly. Our products are available in 2 sand types, the fine sand and coarse sand. You can choose to have your beads smooth finished or rough finished. Use with water as a lubricant for better result. 

TIME-SAVING - Create your very own gemstones effortlessly in a matter of minutes. Grind and drill precious stones to perfectly round beads using this tool. Just install it on any drilling machine and achieve the result you want in just a few seconds! 

COMES IN MULTIPLE SIZES  - Choose the size that best suit your needs. These are available in different sizes, 10 MM, 12 MM, 14 MM, 16 MM, 18 MM, and 20 MM, allowing you to create gems and stone balls of any size.  

EASY TO INSTALL - Comes in spherical concave shape that makes it easy to be installed. The functional structure and design are very simple, making it convenient to use.  

FITS ALL DRILLING MACHINE -  Fits perfectly and can easily be installed on bench drilling and standard hand electrical drills.  

SCOPE OF APPLICATION - Suitable for forming and grinding spherical beads with less to no effort. It works on jade, pearls, stone, ceramic and crystals and other precious stones.  

HIGH-QUALITY - Made of premium electroplated diamond material that's guaranteed durable and can withstand heavy use.  

Get yourself this Spherical Concave Head Grinding Bit and start making DIY precious stone beads today!


Material: Electroplated diamond

Grinding Bit Size (mm): 10 / 12 / 14 / 16 / 16 / 18 / 20

Drill Bits Size (mm): 0.8 / 1.0 / 1.2 / 1.5 / 1.8 / 2.0 / 2.2 / 2.5 / 2.8 / 3.0

Type: Coarse Sand / Fine Sand

Package Inclusion/s: Get 1 pc. Spherical Concave Head Grinding Bit with 10 pcs. drill bits (0.8 - 3.0 mm)


We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 45 day guarantee.

If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase.

Buying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right.

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Remember: Shipping usually takes 2-3 weeks - read our Shipping for more details!

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