【Durable and Nontoxic】Adopting high quality material, which is durable, non-toxic and without deformation for long term use. 【Detachable Design】Simple clip design makes it easy to apply and remove.This product is poultry leg ring that can help you better differentiate and manage different breeds. 【Save Money】Our clip on leg rings number are reusable, this will be help to reduce breeding expenses. 【Marking and Distinguishing】Comes 100pcs in one bag, these rings marked from number 001 to 100, each ring has a number mark, which will help to keep different breeds apart, mark suspected chicken and separating hatches. 【Our Guarantee】If you have any other question, please free to contact us, we will try our best to solve your problem.