The OEM Tops Phone Call Book TOP4003 is a spiral-bound message book designed to provide a permanent record of every call received or long-distance call made. It features a notes section on the back for longer messages and includes carbonless message forms that are perforated and printed in blue and red ink. Each page contains four message forms in a two-part format, with an original on white paper and a duplicate on canary paper. The detached size of each page is 2-3/4 x 5 inches.