Heavy duty steel is real bicycle racks
One is for a 26 inch bike Other is for 700c 29er They will fit on either $20 each steel is real minor weight penalty 50-80 grams on aluminium but 2 x stronger ! Pick ups in afternoons after 530pm or sundays ( Rusty one is only surface rust will come off easy ) might throw in some free bicyce parts with the purchase great for new or retro mtb builds or commuter builds