Looking for a fast, convenient way to clearly mark your system components? 3M™ ScotchCode™ Write-On Wire Marker Book SWB make marking wire and cable (with an O.D. of 0.16–1.55”) easy, while providing a self–laminating protective shield over the legend. The liner tab allows, easy removal of markers from the liner to minimize contamination of the adhesive. 3M ScotchCode Write-On Wire Marker Books SPB come in a variety of pre-printed options and are ideal for use in marking circuit breakers and alarm systems.