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