Specification :Out Diameter ?2004-400,bore ?25.4-50,Thickness:1-4 Surface coating: Original color, Tin (Titanium)-coated or Azoted. Types: Teeth or Teethless Teeth Types: acuate, arc stagger, rugged. It is made according to application. Material: M2 and super-hard High Speed Steel. Application: Circular saws in high speed steel or in super high speed steel suitable for cutting-off steels and alloys with hardness between 500N/mm2 and 800N/mm2 .The saw blades are used on manual, semi-automatic and solid sections up to 200mm. Remark: Different application makes out different teeth types and teeth number.