The Profile Racing Chromoly Race Crankset is everything you need to run Profile cranks except the bottom bracket (which is sold separately). Crankset includes crank arms, 19mm GDH heat-treated CrMo axle, GDH CrMo axle bolts, flush  washers, sprocket bolt, and crank installation/removal tool. Ultra strong and light from the USA-made quality you've come to expect from Profile Racing. 

The flatland cranks use a micro drive bolt so most likely are only compatible with Spline drive sprockets. 

Specs:

Arms: 4130 Chromoly
Spindle: 5.625" 19mm GDH Chromoly
Hardware: Chromoly Flush Mount

*** CLICK here and add to cart to change spindle to 6" ***

*** CLICK here and add to cart to Upgrade to Titanium Spindle ***

*** CLICK here and add to cart to Upgrade to Titanium Crank Bolts ***