You've been chasing a blurry duplicate copy for twenty minutes. The customer's invoice is smudged. Your records don't match. It shouldn't take this long to raise a tax invoice. The Spirax 500 carbonless book gives you crisp, clear copies every time, with sequential numbering so no two invoices share the same number. A protector board stops write-through onto the next form. Spiral binding lets you fold the covers and forms back for easy access mid-job. Quarto size at 250×200mm fits a standard desk setup. Add to cart and stop wrestling with your paperwork