Attributes:
Cutting Diameter: 21mm / 0.82-inch
Product Name: Glass Hole Saw
Material: Metal,Diamond Particles
Shank Size: 8 x 25mm / 5/16-inch x 1-inch(D*L)
Total Length: 56mm / 2.2-inch
Coating: Nickel Plated
Side Hole Size: 15 x 4mm / 0.6-inch x 0.16-inch(L*W)
Main Color: Silver Tone
Speed: 800-1000RPM
Package Content: 2pcs x Glass Hole Saw
Weight: 47g
Package Contents:
*2 pieces Diamond Drill Bits

Features:
---These drill bits are easy to use and deliver smooth and efficient drilling. They are engineered to provide high precision, allowing you to create clean and smooth holes without chipping or damaging the material.
---Designed for professionals and DIY enthusiasts, this set offers exceptional cutting power and durability for a wide range of materials.

Useful Tips:
---Apply Lubrication (water): Depending on the material you are drilling, you may need to apply lubrication to reduce friction and prevent overheating. This is particularly important for metal or hard materials.
---Place the tip of the coated brazed diamond hole saw on the desired drilling spot, ensuring that it is perpendicular to the workpiece surface.
---Once the drilling is complete, carefully remove the carbon steel hole saw from the drill. Clean any remaining debris from the hole and inspect the result to ensure it meets your requirements.