41 A 45 Tooth Eight (8) hole Sprocket for the Peerless H 110-001 Series heavy Duty Differential. 
This sprocket has the Eight (8) bolt hole pattern and the larger 3.23" ID.  7.450" OD  Wt.  1.80 lbs

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