The Profile Column Spline Drive cranks are a stronger, stiffer and more street friendly version of Profile's classic 3-pc crank design. The Column cranks feature 4130 tubular chromoly arms designed for spline drive sprockets only, wraparound spindle and pedal bosses, a 22mm hollow heat-treated chromoly spindle for maximum strength, and hollow flush mount spindle bolts. Made in the USA.
-No boss only
-Arm weight (for the set): 20.14 ounces/608 grams
-Includes 22mm GDH CrMo axle with 10mm aluminum axle bolts: 8 ounces/228 grams
-22mm Crank Tool Included.
Spindle: 22mm Hollow Chromoly
Spindle Bolts: 17x1.25mm Flush Mount (x2)
Spindle Splines: 48
Sprocket Bolt: N/A - Compatible with 22mm Spline Drive Sprockets Only
-Lifetime Warranty to original purchaser.