Spirax business books are ideal for use by small and medium size businesses. All Spirax carbonless business books are made using high quality NCR paper so your duplicate copies remain clear and crisp | No carbon required | Includes a protector board to prevent write through onto 2nd forms | Includes sequential numbers so no two customers can receive the same | Spiral binding ensures the covers and forms can be folded backwards | 50 duplicate sets | 1 form per page | Pre-printed template