Edible beef collagen which has been mechanically processed to provide uniform diameter. Typical use: Fresh or Smoked Maximum outside diameter of stuffing horn: 12.5mm Stuffing capacity per strand : 10 lbs Strands per package: 3@50' length Color: Clear NON-RETURNABLE Ordering 500 or more? Place your order by phone to take advantage of our quantity discount. NOTE: Casings may burst, and that is most often due to processing errors -- cooking too fast or too hot. Casings are somewhat porous, and moisture can escape at only a slow rate. Cooking too fast overwhelms the porosity of the casing, causing a burst. This can happen with even large (5-inch in diameter) fibrous casings, which are among the strongest casings available anywhere. Please be careful to follow proper processing techniques, or call us for help if you are unsure.