Tough, flexible steel back and Matrix II steel with 8% cobalt cutting edge give maximum durability. Angled shank for faster cutting. Material: Bi-Metal, Blade Length: 6", Teeth Per Inch: 6 TPI No. DW4851: Type: Taper Back, Material: Bi-Metal, Blade Length: 6", Teeth Per Inch: 6 TPI No. DW4860: Type: Taper Back, Material: Bi-Metal, Blade Length: 12", Teeth Per Inch: 6 TPI No. DW4862: Type: Taper Back, Material: Bi-Metal, Blade Length: 6", Blade Length: 6", Length: 6", Teeth Per Inch: 6 TPI No. DW4863: Type: Taper Back, Material: Bi-Metal, Blade Length: 9", Teeth Per Inch: 6 TPI No. DW4864: Type: Straight Back, Material: Bi-Metal, Blade Length: 6", Teeth Per Inch: 10 TPI No. DW4865: Type: Straight Back, Material: Bi-Metal, Blade Length: 9", Teeth No. DW4866 : Type: Straight Back, Material: Bi-Metal, Blade Length: 6", Teeth Per Inch: 14 TPI No. DW4867: Type: Straight Back, Material: Bi-Metal, Blade Length: 6", Teeth Per Inch: 18 TPI No. DW4868: Type: Straight Back, Material: Bi-Metal, Blade Length: 9", Teeth Per Inch: 14 TPI No. DW4869: Type: Straight Back, Type: Straight Back, Material: Bi-Metal, Blade Length: 9", Teeth Per Inch: 18 TPI ---- 1. This product is imported directly from overseas, so even if it is brand new, there may be some damage to the package, please rest assured that this does not affect the product. 2. Product **and other products made in Japan are not applicable. 3. Packaging and instructions are in English.