DescriptionGood stretching force, superior elongation, easy to use. High-class material, durable, safe and healthy, low allergy, more assured use. It is well fixed, easy to wear and remove, greatly helping to correct the teeth. It provides the consistent closing force to help teeth move and can be easily used even at home.Features-Color:Black -Material:Plastic -Size:0.50X0.50X0.10cm/0.20X0.20X0.04in -Size:1.00X1.00X0.10cm/0.39X0.39X0.04in -Size:0.85X0.85X0.10cm/0.33X0.33X0.04in -Size:0.70X0.70X0.10cm/0.28X0.28X0.04in -Note:There are 100pcs brace bands in each bag-Lasting and gentle, make the patient feel comfortable and improve the result of dental treatment.-Hypoallergenic, ensuring the safety and health of patients during orthodontic treatment.-Power bands for braces are widely used in orthodontics, which can be used for traction, correction of torsion, sliding clearance, closing scattered clearance, and so on.-Close teeth gaps permanently without the cost of braces and other high dental procedures.-Can effectively help orthodontics, they are must-have for your life. Professional and practical.