The CRL Nordic Plastic Cutting Blades are designed to give clean, chip-free cutting on formica, acrylics, plexiglas, heavy wall PVC pipe, and other plastics. Uni-Chip design tooth pattern makes cutting smooth and fast. Arbor size is 5/8" (16 mm). NOTE: 60 tooth blade will only cut lexan or polycarbonates which are 50% harder than acrylic or plexiglas. Important Notes: 60 Blade will only cut lexan or polycarbonates which are 50% harder than acrylic or plexiglas.