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

Specifications and shapes:

Product Name:Gemstone carving tools, Diamond carving burrs

Heads Shapes:Conical Pointed Nose

Heads diameter (Max.): 3.2 mm

Heads Length:about 17mm

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

Shank diameter:3mm (close to 1/8 inch),They will fit your hand drill, drill press with a 3mm collet.

Grit :150 (medium)

Premium type diamond coated in grit 150 (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.