Brake Drum, 4-1/2 in., Machined ID, No Flange
Machined either “ID” for drum brakes or “OD” for band brakes. All drums have three sets of mounting holes: 3 and 4 hole on a 3.75″ diameter bolt circle and a 4 hole on a 3.228″ bolt circle to match the Azusa mini-hub.
