Swivel: Cast Anodized Swivel with nylon bushing clamps and locks onto 4" post with a stainless steel locking pin Swivel mounts solid to the mounting plate and gets its rotating function by swiveling on the post and then tightening the swivel clamp handle. Anodized Aluminum swivel control rod
Mounting Pattern: 5" X 5" Mounting holes are bigger and require a 5/16" bolt (if using a smaller bolt you may need to use a washer)
Takes all rotational play out of the unit
Unit is Anodized with Stainless Steel hardware for corrosion protection
PLEASE NOTE THAT THIS ITEM MAY TAKE 10 TO 15 BUSINESS DAYS TO SHIP