X-VERSION RETRO are E-MARKED mirrors. They are with a plastic body and aluminum insert on the back. They are sold in PAIRS, available in the standard version in BLACK color with black insert. The COLORED INSERTS are sold separately as an option in different colors that can replace the standard black. They have a ring attachment that is perfectly compatible with the installation on BARRACUDA B-LUX ANTIVIBRATIONS (to be purchased separately). TO REMOVE THE INSERT, UNSCREW THE BALL JOINT AS INSTRUCTION. Design by BARRACUDA.