1, Finish:Normal nickel plated on the top or black nickel plated in the bottom

2, Teeth:There are 3 different teeth types as (A)old, (B)new, (C)new

3, Body:Same as the Carbon Steel Hole Saw body, it makes your cutting job easier and lower cost

4, Size Range from 19mm to 140mm

5, Arbor:no arbor

6, Function:It's able to cut holes in Glass, Tile, Ceramic, Marble and Granite etc.,

7, Drill:The glass drill(UKJ-B-D1) can only cut holes in glass,if you need to cut other materials, you must take the drill off and if possible, it's better to use with the drill guide

8, Diamond Teeth: We have three levels of quality,40/50Mesh(Top)50/60Mesh(Good)80/100Mesh(Medium)