These aftermarket crank arms (available in 175mm length only) for 19mm x 36- tooth splined BB axles (including DMR and Gusset crank axles) are made from Japanese SAE4130 chromoly steel and feature tidy and strong TIG welding.
They're also white - the main selling point for many people - and boy, they look pimp. Performance-wise, they're the typical high quality you expect from Gusset products, and they are threaded so you can use Gusset 'One Key Release' crank bolts and caps, which are available separately, or come with the complete crank arms/axle set.