41 A 54 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.  8.890" OD
Click on the link below to view the H 110-001 differential.

Peerless Gear Heavy Duty 8 Bolt H 110-001 Series Differential Axle 1" OD x 49.624" long
Actual weight: 2.80 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.