41 A 40 Tooth Eight (8) hole Sprocket for the Peerless H 110-001 Series heavy Duty Differential.  6.650" OD
This sprocket has the Eight (8) bolt hole pattern and the larger 3.23" ID.  
Click on the link below to view the H 110-001 differential.
Actual weight: 1.30  lbs

These Eight (8) hole sprockets are custom cnc machined (Mazak M#110001) for your order and cannot be returned. 
So make sure you are ordering the correct item.