Adams Spiral Invoice Book, 8 1/2 x 7 1/4 Inches, 2-Part, Carbonless, White/Canary, 50 Sets per Book (SCD8740) QUALITY INVOICES: Adams Invoice books provide a professional invoice or customer receipt; easily customize by using the extra space at the top and your company stamp 50-TWO PART CARBONLESS FORMS: Customers get the perforated white top copy; retain the yellow copy for your records SPIRAL BOUND EFFICIENCY: A neat spiral keeps your duplicates in chronological order for a permanent record of all invoices CONSECUTIVELY NUMBERED: Large 6-digit numbers help you thumb through orders quickly 50 SETS PER BOOK: Each book provides 50 2-part carbonless forms