Presonus CDL Rigging Sling - Rigging Hardware for CDL SeriesThe CDL Rigging Sling is required on all installations that include 4 or more CDL series loudspeakers in a vertical array. Additionally, in installations using the CDL Rigging Extension Bar deployed with an upward or downward tilt of 12 or greater, the CDL Rigging Sling must be utilized. Features: Pull Back Sling for CDL Series Loudspeaker Arrays Size (H x W x D): 9. 25 x 1. 6 x 7. 7 inches Weight: 2. 5lbs