LDH blades are made out of carbon steel and are designed with a universal opening so they will fit on other 45 mm rotary cutters.
These rotary blades are made from carbon steel, the same material used to make their Midnight Edition Fabric Shears.
This can vary person to person and how one uses their cutter, as well as the type of cutting mat they have. They tested their blades at various fabric shops in Toronto, and after using them for up to 8 hours a day, five to seven days a week, each shop got between 3 - 4 months of use from one blade!
Please note: the blades are coated with oil to keep them protected from humidity during transportation. We recommend wiping them off with a scrap piece of cloth before use to avoid staining your project.