CNC machined alloy cups and flush bearing covers, with big, burly, high quality sealed cartridge bearings.
Sliding axle system with spacers to allow a variable chainline. (Axle not included.)
Waffen BMX BB system for 22mm axles.
(also compatible to most other similar sliding 22mm axle crank systems.) 
Features
Precision CNC machined alloy cups.
Variable, sliding chainline.
2 large replaceable industrial cartridge bearings.
CNC machined flush fit bearing covers.
Weight 240g (inc. spacers)