Stainless steel and brass fittings. Fits Mariner/Mercury/Mercruiser 1965-date; Force 1993-date w/Mercury controls; all Mariner engines with Mercury/Mariner controls (except pre-1993 40hp & lower); all 1993-date Force (US Marine) w/Force/US Mariner/Mercury controls. TFXtreme cables feature a splined-core for easy movement and minimum lost motion (4" min. bend radius). Specifically designed for complex and/or long cable runs, but they will allow any control to operate more easily with less drag and wear.