Use on Portable Circular Saw , Table Saw For finish ripping of hardwood ,soft wood. Goldtol number Diameter Bore size Number of Teeth B136-10-36 136 10 36 B165-16-36 165 16 36 B184-15.87-40 184 15.87 40 B205-16-40 205 16 40 B250-25.4-60 250 25.4 60 Anti-Kickback butts reduces saw blade kickbacks from over feeding for safety. It will make good cutting feeling during operation the saw. Goldtol produce the saw blade with anti-kickback butts more than 9 years.