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The shaft is designed to insert into the flight and allow for a full and free rotation. It is easy to eliminate the spin by adding an o-ring over the shaft. The construction has been designed to give this shaft 17° degree of longitudinal flex to reduce deflections.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.