Edible 18 mm collagen casings for sausage making are easy to stuff. Stuff them dry. They are uniform in size and can be used for fresh or smoked sausage. Made of beef protein.  3-49.2' strands in package. 8 lb. capacity per strand. Max. outside diameter of horn is 11.5 mm. Recommended horn size for auto twist linker is 10 mm. Great for making snack sticks with venison, beef or pork. Mahogany in color. Made in the USA.