What do the letters A-60-SBF mean?
A= Aluminum Oxide
C= Silicon Carbide
Z= Zirconia Alumina
The Middle Number is Grit Size
16- 100
The next letter is Hardness grade:
N,O,P Soft
Q.R.S Medium
T,U,V Hard
The last two letters are the Bond:
B= Resin
BF = Resin with Fiberglass reinforcement
By: Craig Cooley
