Product Description
Operating on a similar premise to single tooth hole cutters and TCT hole saws, these hole cutters feature multiple tungsten carbide tipped (TCT) teeth and can be used on a variety of materials, ranging from ceramic tiles to timber and fibreglass.
Salient Features & Advantages
1. Fast cuts in light pipe, angle iron, tubing, conduit and channels.
2. No sparks and virtually burr free, It can precisely cut very high quality and smooth holes.
3. Carbide tipped blade lasts longer than abrasive and cuts cleanly and accurately.
http://www.boyatools.com/hole-saws/