Brady's M6C-1900-439-BK vinyl labels are suitable for general and electrical identification. Use the labels in laboratories, during inspections, on telecom cables, as barcode labels or on various equipment. The black labels have a glossy finish and are made of vinyl. The labels stick permanently to both smooth and rough surfaces. The labels are resistant to extremely low temperatures and to friction. The labels can be printed on one side and there is room for up to 50 characters per line. These labels replace the black Brady PTL-43-439-BK vinyl labels.