27mm cheap diamond tip coated glass drill 3mm-120mm

1.simple to use 2.size from:3mm--120mm. 3.factory direct & competitve price 4.high diamond concentration 5.excellent service

                    

                        YIYAN  diamond core drill for glass and marble

              

            

We are looking for an angent for our products.

size	5mm-120mm (dia of the hole)
grite	50-60,or upon your request
used on	suitable for cutting round glass , stained glass, ceramics, ceramic tile
advantage	competitive price & long service time
ODM/OEM	Special design available upon request

Types and Styles of Diamond Drill Bits

Diamond drill bits come in many different sizes and shapes but are primarily of two basic styles, 

blunt nose bits and core drill bits. 

 There are also two basic types of diamond drill bits relating to the application of the diamonds; bonded and sintered.

Features:

1. Super hard carbide tip, good quality Cr40 shank, auto-welding with silver material, or HF welding;

2. Drilling on glass, granite, tile and glass material, good concentricity and sharp tip could guarantee the concentricity and good quality;

3. Heat-treatment: auto net belt stove handling equipment, could meet strictly torsion test;

4. Surface treatment: Zinc-coated, black finished, electric-plated and sand-washed

27mm cheap diamond tip coated glass drill 3mm-120mm