Wholesale Pre-Roll Filters: OCB Virgin Unbleached perforated filter tips are made from organic ingredients and unbleached paper, making them environmental-friendly. OCB filter tips are perforated which means they are lined with markings which makes it easy to roll the perfect filter. OCB Virgin Filter Features: Size: 60mm X 18mm Easy to Roll Perforated Tips All-Natural Unbleached Genuine Quality 50 Cards per Booklet Made in Spain