NONE OF THE HUB GUARDS ON THE MARKET FIT THE PROFILE HUBS RIGHT SO PROFILE MADE ONE JUST FOR THEIR HUBS. FITS THE REGULAR AND CASSETTE PROFILE HUBS ON THE NON DRIVE SIDE. ANOTHER THING THAT IS REALY COOL ABOUT THEM IS THAT THEY FIT OVER YOUR HARDWARE SO THERE IS NO NEED TO SPREAD YOUE FRAME OPEN ANYMORE TO FIT IT IN THERE. WORKS WITH 3/8" OR 14MM AXLE. 100% ALUMINUM TO HELP KEEP IT LIGHT. PRICE IS FOR JUST THE GUARD...DOES NOT INCLUDE HUB. WEIGHT = 2.4 oz