The Primo Pro cranks feature a 3-pc design with heat-treated chromoly crank arms that square off near the pedal bosses to prevent denting, wrap welded spindle and pedal bosses for strength, a 22mm hollow heat-treated chromoly spindle and hollow chromoly spindle bolts to help reduce weight without sacrificing strength. RHD/LHD.
Spindle: 22mm Hollow Chromoly
Spindle Bolts: 15x1mm Hollow Flush Mount (x2)
Spindle Splines: 48
Sprocket Bolt: 10x1.5mm (x1)/8x1.25mm Nano (x1)
Weight: 33.2oz (w/o BB)
Buy Primo from Chain Reaction Cycles, the worlds largest online bicycle store.