Adams NC2817 A-2817 Carbonless Job Invoice, 2-Part, 8-1/2 x 11-7/16", Pack of 100 Sets. Job Invoice Forms for service and repair contractors come in two-part carbonless sets with large description areas for details about the work to be performed. The back of the second part has area to record materials used and labor. Space at top of form to stamp your company name. Two-part carbonless form has 16 lb. top sheet and heavier white tag stock for the second sheet. Includes 100 sets.