St. Martin HolloFlat Alloy Cranks No BB  E-mail this product to a friend       Product Description: New HollowFlat cranks are now compatible with normal sprocket (no more threaded sprocket) 22 mm Cr-Mo hollow axle 7075-T6 alloy hollow arms - 145 or 160 mm self-extracting axle bolt This product qualifies for quantity discount pricing.what's this? Select Crank Spec 145mm Arm Color-Black 160mm Arm Color-Gray 145mm Arm Color-Purple 145mm Arm Color-Khaki 150mm Arm Color-Black 150mm Arm Color-Grey 145mm Arm Color-Dark Blue 145mm Arm Color-Gray 160mm Arm Color-Black 160mm Arm Color-Purple 160mm Arm Color-Khaki 160mm Arm Color-Dark Blue        Additional Information: