Steel mini-hub with set screws are designed for smaller sprockets.
Adapts to Azusa 4-1/2″ brake drum. 3.228″ bolt circle, 4″ OD.
Also for Indus pattern (2-7/8″ bolt circle) sprockets.
For 1″ axle. Zinc plated. Use with AZ8435 key stock.
Use with these steel and aluminum mini-sprockets Steel Mini-Hub & Aluminum Sprockets
