Mackie PA-A2 Eyebolt Kit for HD Series this product is the perfect eyebolt kit custom made to fly your speakers or hang them from the ceiling either sideways or straight up and down. This Mackie PA-A2 Eyebolt Kit for SRM450 & C300z helps the bracket a perfect fit right onto the speaker making it easy to hang your Mackie speakers safe and secure. Mackie Active Loudspeakers are custom fit with rigging points for a sturdy permanent installation. Use a Mackie PA-A1 Kit for HD Series PA-A2 Eyebolt Kit for safe and proper installation of your Mackie speakers. Always remember to have your Mackie equipment installed by a licensed and insured audio installer for the safety of your viewers and listeners! Please note to hang the speaker sideways, you will need: (2) eyebolt kits per speaker To hang it straight (1) kit per speaker.