New Street BMX cranks from Profile. The Column cranks feature a brand new arm design which are beefier & stronger than the regular Profile Race cranks. These cranks also run on a new ultra hollow 22mm heat treated spindle. Hand made in the USA from the finest 4130. NO BOSS ONLY- SPLINE DRIVE SOCKET MUST BE USED Titanium Spindle upgrade available at checkout! Once at checout you will be prompted to choose a Titanium Spindle if required.