This blade is the classic Ripper for both hardwood and softwood. It features the flat-top grind for cutting with the grain efficiently; ample gullets for fast chip-clearance; expansion slots and turbulence-reducing copper plugs. The new blade with the 20° hook angle Features a thicker plate and cuts a wider kerf. Use in single and gang-rip saws, #612300, (D) diameter: 12 (300mm), teeth: 30, (D) bore: 1, tooth grind: ft, hook angle: 20°, kerf (B): .160 (4.0mm), Plate (C): .110 (2.8mm), 612300 carbide Tipped ripping standard 12 inch dia X 30T ft, 20 deg, 1 inch bore