DescriptionThis is a set of orthodontic springs designed to provide continuous tension for orthodontic patients with irregular teeth. Made of durable nickel titanium, not easy to rust, and durable. Come and buy a set, you deserve them.Features-Color: Silver -Material: Nickel Titanium-Size: About 1.50X0.01X0.01cm/ 0.59X0.00X0.00inch -Nickel-titanium material is elastic and not deformed. -Adopt quality materials, which can be used for a long time. -Wear well and smooth corners, and they won't hurt your teeth. -Made of nickel titaniummaterial, which can serve you for a longer time. -Good quality and cost-effective, you deserve them, come and take them home.