fast engagement, looks good, sounds good. Made in USA.
axle stud system is prone to loosening (I've got the SS/6 speed, nutted version). The freehub snags sometimes, not in a big way, just barely noticeable. I've been running it SS and haven't noticed this since I took the derailleur off.
These guys have been the benchmark for BMX hubs for a long time. They know what they're doing.