-Formed .045" spring tempered stainless steel wire features contoured anterior pad with smooth radii. -Positive contact with soft tissue provides greater efficiency in distalization and arch development. -Pad is slightly flexible for minor anterior wire adjustments. -Posterior of wire features adjustable molar loop stops and ligation hooks for tying to molar tubes. -Lip bumper sizing is from distal of the omega loop around the contour of the arch to distal of the opposite omega loop. - Kit Contains : One each of all seven sizes. **For further product information, please contact Chat Support**