MTD Idler Pulley part# 956-0358A is listed as "No Longer Available" by MTD. This pulley has an outside diameter of 2" and an inside diameter of 5/8" and was used on the following snow thrower attachment models; 190-491-190, 190-491-000, 190-832-000, 190-832-190, 190-930-000, and190-930-190. There may be models that use this part that we do not have listed here. Please refer to your owners manual or a parts breakdown for your model, to assure that this is the correct part for your machine, before you order.