Heavy Duty Pole to Pole Mounting Hardware;The EZ-HD-PTP is to be used with Ambient's EZ2-35W2MC; Mount a EZ2-35W2MC to an existing sturdy mast (such as a radio/TV antenna, flag pole, etc.) with a stand-off; Stand-off varies depending on diameter of existing mast;Important Note: For additional stability, it is highly recommended that you order two of the EZ-HD-PTP mast to mast mounting kits at a time;The EZ-HD-PTP is to be used with Ambient's EZ2-35W2MC. Mount a EZ2-35W2MC to an existing sturdy mast (such as a radio/tv antenna, flag pole, etc.) with a stand-off. Stand-off varies depending on diameter of existing mast.;Important Note: For additional stability, it is highly recommended that you order two of the EZ-HD-PTP mast to mast mounting kits at a time.