Does this come with the hardware necessary to mount on a round porch column? What kind of saw is recommended to trim the railings down?

Hello, and thank you for your interest in Trex. The hardware included in the Enhance railing kit for bracket to post attachment is only designed for attachment to a pressure treated post. Attachment of the railings to a round column would require a custom fabricated solution and we are unable to confirm if it would be code complaint. Please ensure that the screws being used for bracket to post attachment are approved by a local code official/engineer. For cutting Trex Enhance railing Trex recommends a carbide tipped blade with 60 teeth or more. I hope this helps answer your questions. Thanks, Tori - Trex Customer Care Team