Extremely low profile and small in size, making them more aesthetically pleasing. Stainless steel. Very comfortable to the patient because of the small size. Slides easily onto the archwire for customized placement. Crimps easily into place with Weingart style utility pliers. 2mm in length. For Rectangular Wires .014" x .025" through .019" x .025" and Square Wires up to a maximum of .020" x .020", Wire sizes .012" through .018".