Beef Backstrap tendons are Long Lasting Dental Chews. From 1 to 10 its hardness is 9, there fore a great alternative for Aggressive Chewers. Beef Tendons are a good alternative for dogs that love Bully Sticks and are also odor free. Like all Supercan Bully Stick Products, these tendons are free range grass fed source made at our own Food-Graded facility free of chemicals for happy & healthy Dogs.