OUR PART # RK-M10-18X
The Mackie SRM-450 and C300 loudspeaker cabinets employ M10 rigging points in multiple locations. The back "pullback" rigging point is recessed enough that it requires a non standard eyebolt to be used as a pullback.
The RK-M10-18X Rigging Kit is designed just for suspending these cabinets. Each kit includes three M10 eyebolts that are sized to the fixed depth of the M10 threaded sockets and steel threaded extension that anchors into the recessed pullback point at the back of the cabinet.