The all new DynaFlex® exclusive CS®5 System delivers non-compliance treatment for all Class II & Class III cases. The NEW Twist-Lock Pivot was skillfully designed as a one-piece component with no moving parts. This will guarantee a no-hassle installation and improved performance. The widely known CS® spring is made from an exclusive nickel titanium material with specially built key-hole ends that improve the strength and durability by 40%. This spring will load force instantly and remain extremely consistent throughout treatment with the confidence of longer usage. The benefit is a smoother, more constant force that performs better and lasts longer. US Patent Pending.