30Pcs Diamond Jewelry Drill Bits for Sea Glass Shells Gem Stones Lapidary with Diamond Drill Bits for Glass Diamond Tipped Drill Bit Burrs

New one box set of 30 Pcs diamond coated grinding burrs / pointed heads in box set

Specifications and shapes:

Heads Shapes:Sphere, cylinder, bullet, or needle sharp
Total length:45mm (1 3/4" inch)
Shank diameter:3mm (close to 1/8 inch),Suitable for dremel, electric grinder, carving machine, machinery supporting assembly with a 1/8" collet.
Premium type diamond coated in grit 150 (medium), more durable than the ordinary diamond coated burr.

Total length:45mm (1 3/4" inch)

There are two different collet sizes with Dremel: 2.35mm (3/32 inch) or 3mm (1/8 inch).

Shank Diameter:2.35mm(3/32"); Suitable for electric nail drill, carving machine with a 3/32" collet.

If your chuck of Dremel(Suitable Dremel4300-8050) has an Universal 3-jaw chuck, then the grinding bit can be installed directly.

However, it is NOT suitable for dremel with 3mm 1/8" chuck(such as:models 3000,4000)

If your chuck of Dremel is 3mm (1/8"), maybe you need add the Universal 3-jaw chuck for Dremel.(Our package does't contain 3-jaw chuck).

Grit :120 Medium

Premium type diamond coated in Grit 120 (medium),  more durable than the ordinary diamond coated burr.

Use with water as a lubricant is better.

Suitable for use in grind the edge of glass, marble, rock or jewelry. And apply to drilling glass, shells, tile and stone.

We will send out your order within 1-2 days after payment has been received and cleared.

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