When cutting acrylics and plastics, "chip-welding" – A melting of the material is a concern. But not with these non-melt blades. With a modified triple-chip grind and a 2° negative hook angle, They produce less heat than a standard blade, leaving a crisp and smooth edge., #LB12961-30, (D) diameter: 12 (300mm), teeth: 96, (D) bore: 30mm, tooth grind: m-tcg, hook angle: -2°, kerf (B): .125 (3.2mm), pinholes: 2/7/42, 2/9/46 & 2/10/60, plate (C): .102 (2.6mm), LB12961-30 carbide Tipped non-melt plastic 12 inch dia X 96T m-tcg, -2 deg, 30mm bore