Designed to one set of specifications
All parts used in Simplicity products are made to Simplicity specifications. Simplicity engineers don't just buy parts "that will work"... each part is designed specifically for its job on a Simplicity machine. This makes the tractor and its attachments function as one unit... instead of a collection of unrelated parts that will hopefully work together adequately. Ask an owner... and compare.
Simplicity is our name
... and our claim
(here's owner proof)
[Source: Simplicity -- for picture perfect outdoor maintenance, 1969 Product Catalog, Form No. 868, courtesy of John Boesch]