.it is for professional grade

.Alternate teeth,used for wood and mild plastic etc

.size: 4 1/4"(110mm) with 24T,40T

    5"(125mm) with 40T

    5 1/2"(140mm) with 40T

   6"(150mm) with 24T,40T

   6 1/4"(160mm) with 60T

   7"(180mm) with 24T,60T

   7 1/4"(185mm) with 40T,60T

   7 1/2"(190mm) with 24T,60T

   8"(200mm) with 40T

   8 1/4"(210mm) with 40T,80T

   9"(230mm) with 24T,80T

   10"(250mm) with 40T,80T

   12"(300mm) with 60T,100T

   14"(350mm) with 60T,100T,120T

   16"(400mm) with 60T,100T,120T

   18"(450mm) with 80T,100T,120T

   20"(500mm) with 80T,140T