Our hog casings specification follows: 40 40/42 42/44 44/46 46/+ And so on .All of the calibers are reasonable . 3. Standards: aa , a ab and b . 4. The packing in plastic cask . 150hanks/cask .Or according to your special requests. 5. The casings are approved by eu and have passed haccp system . 6.Length :90m 88m 85m 80m 75m and so on all according to your special requests . 150hanks or 500hanks/cask