Sturmey Archer Brompton BWR driver assembly
This driver is used in the Brompton Sturmey Archer BWR - wide ratio 3 speed hub
Included as part of the driver assembly are the following parts:
the actuator plate (HSA470, not shown in the BMR parts list)
dust cap (HSA102, number 1 in the BWR parts list)
ball cage assembly L.H. 6.4mm (HSA284, number 2 in the BWR parts list)
Sturmey Archer ref: HSA800