The new Fly Dolmen cranks are the first cranks to feature a one piece invest cast pedal boss which means there is no welding on the pedal boss, this will make it stronger and gives the arms a smooth and clean look. They also feature Flys bend resistant D shape arms, 2.5 axle system, Cromoly 4130 CNC internally machined spindle and Heat treated CNC machined bolts with sink allen hex. Weigh only 863grams and comes in gloss or flat black