BFD CHROME EXHAUST TIPS HAVE HIGH QUALITY CHROME AND THE FLUTES CUT INTO THEM LIKE THE CONTRAST CUT ONES DO. THEY COME WITH THREADED HOLES TO MATCH UP TO MOST AFTERMARKET EXHAUST ALREADY. 4 HOLES ON THE 90 DEGREE MARK AND 3 THAT ARE ON THE 180 DEGREE MARKS. CUSTOM ORDER AVAILABLE WITH THREADED HOLES WHEREVER YOU NEED THEM