This is a set of the following two products: MTX BEAMRACK Ⅱ V-TYPE (Purchased for approximately 8,000 yen) MTX DUAL SIDE FRAME (FOR MTX BEAMRACK Ⅱ) (Purchased for approximately 5,000 yen) I purchased these new and used them for a little less than a month during a bicycle trip in Europe and America. The side frame has some scratches, but there are no problems with its practical use. Even on carbon road bikes without eyelets, these can be used if the seatpost is metal (I used them this way).