For Gravely Walk Behind tractor adjustable PTO Dust cover.
This cover was designed to cover the PTO outlet on the front of older Gravely walk behind tractors when an attachment is not on the unit and or in storage to keep dirt out.
it connects to the tractor with the 4-bolts that would normally hold the attachment on the unit.
This is especially helpful when you have a tractor that has to set outside in the weather
or setting in a barn or garage for extended time periods.
These covers are made of Tough PLA + or PETG material and are very rigid. 
This cover is not made by Gravely® or Ariens® company.