Use the cutter’s exact model number and the blade reference specified by the manufacturer. Similar-looking blades may differ in length, thickness, hole position, bevel, or mounting shape, so visual matching is not reliable. The model number may be printed on the cutter body, packaging, manual, or an existing blade holder. Confirm whether the tool is a bevel cutter, straight cutter, acrylic scorer, or another type because each can use a different cutting edge. Logan mat cutter replacement blades should be selected by stated model compatibility rather than by brand name alone. Keep the blade package or record the approved blade code near the tool to reduce ordering mistakes during later replacements.