Coil Closed Springs (O/Quest) 12 x 30 Heavy 9mm Niti x 10

NiTi Closed Coil 012x030 Heavy 9mm Closed coil springs come with pre-attached Key-end™ eyelets. Key-ends are attached firmly to the spring and are manufactured with smooth edges and round holes for easy attachment to hooks or brackets to retract teeth. They provide gentle tooth-moving forces that gradually decrease during retraction.