3M™ ScotchCode™ Pre-Printed Wire Marker Books contain printed vinyl cloth wire and terminal markers with clearly printed letters, numbers, symbols, and industry-standard legends in black ink on a white background. The markers can withstand temperatures of 32 to 150 degrees Fahrenheit (0 to 66 degrees Celsius). The individual character markers that are bound in the bi-fold book are perforated in the center to minimize thickness on smaller gauge wires. This book includes 45 each of each zero to nine numeric markers, and 15 of each L1, L2, L3, T1, T2 and T3 markers.