The HSA125 is a very widely used model of the toggle chains - it fits the AW hub which is the most commonly found application (if you want to check yours, the model will be embossed into the shell of the rear hub).
Raleigh Chopper Genuine Sturmey Archer 3 speed Fulcrum Bearings kit Bike Cycle
Sturmey Archer 3 Speed Sprocket Rear Cog Sizes: 13 14 15 16 17 18 19 20 21 22 T
Bike-Cycle-Bicycle Sturmey Archer 3 Speed Wheel Nut Lock Washers HMW494 9.5mm
Sturmey Archer 3 Speed Complete Gear Cable Universal Trigger Twist Grip FIBRAX
Bike-Cycle-Sturmey Archer 3 Speed Cable Anchor Adjuster for Toggle Chains Hsl759
Sturmey Archer 3 Speed Trigger or Modern Twist Grip Gear Cable Inner Wire
