Profile Racing Column Cranks Black ***Please note that the price of these Profile cranks has recently increased due to a rise in the cost of raw materials. However we still these offer great value for an American made 3 piece crankset*** The Profile BMX Column cranks are the strongest cranks that Profile have ever made! The crank arms are made from oversized 4130 chromoly and fit onto a 22mm diameter 48 splined GDH chromoly axle. Please note: The Profile Column cranks can only be used with a 22mm spline drive sprocket. Due to this they are compatible to run your sprocket on either the left (LHD) or right (RHD) side. Specifications for Profile Column cranks: Brand: Proile BMX Racing Spindle diameter: 22mm Sprocket side: Spline drive so Left or Right hand drive Spindle length: 152.4cm / 6" Weight: Tools required: 8mm allen key Additional information: Lifetime Warranty to original purchaser Includes crank installation/removal tool