The 45mm rotary cutter blade The Arch RB-45 96.005 offers a sharp, continuous cut to replace the worn blade of your rotary cutter. Constructed from ultra-high-hardness tungsten alloy steel with a 45mm diameter, it easily cuts through multiple layers of fabric, felt, paper, thin leather, and vinyl without fraying. Its surgical precision maintains its sharpness for a long time. Indispensable for patchwork, quilting, creative sewing, and graphic arts workshops.