CNC machined 6061 t-6 billet aluminum. Machined logo, mirror polished, and chrome plated.  5 hole fits 99-18 BIG TWIN (EXCEPT 16-18 BAGGERS/DRESSERS, 15 FLHTCUL/FLHTKL), and fits 1 year only 2018 softails (these still use the twin cam derby cover even though they are m8 drivetrains). Proudly made in USA!