SlickBands XR virtually eliminate the problem of difficult to remove matrices. A micro-thin coating bonded to our dead-soft stainless steel reduces bonding agent adhesion by a whopping 92%! Band removal is a breeze. The SXR-series band thickness is .0016". Non-stick coating. Wider sub-gingival extension than the SM-Series. Height 6.4mm (w/ext. 8.6mm), molars with deep cervical preps.