Customize your treatment mechanics by achieving near constant spring forces to move teeth to a more predictable end result.  Constant Force Springs can be stretched up to 3 x their passive length to achieve the desired result.

• Two Spring Lengths 9mm & 12mm.

• Five Force Levels - Extra Light; Light; Medium: Heavy; Extra Heavy.

• Constant Force during unloading.

Force ID (Located on Eyelet):

• 1 Hole - Extra Light.

• 2 Holes - Light.

• 3 Holes - Medium.

• 4 Holes Heavy.

• 5 Holes - Extra Heavy.

Pack of 5.