OT Equator is RHEIN 83 USA's newest line of low-profile castable and direct implant overdenture attachments. One of the smallest attachment systems available, the OT Equator has a low vertical profile of 2.1mm., a diameter of 4.4mm. and offers multiple solutions for overdenture treatment planning when vertical space limitations are a consideration. The system is available in two versions—Castable and Prefabricated Titanium abutments—which are compatible with any implant brand and manufactured with cuff heights from .5mm. to 7mm. Female caps are retained by a stainless steel housing ranging in four levels of retention. A complete line of Equator accessories and tools is also available.