Odyssey LATSA2 Speaker Mount Tripod Accessory Fits Mackie SRM450s and SRM350s, JBL EONs, Yamaha MSR series speakers, and many more 1-1/2" diameter Mounts into a 1-1/2" speaker mounting hole so it can be placed on most tripod speaker stands with 1-3/8" post 1-3/8" internal diameter, 1-1/2" external Mounts into a 1-1/2" speaker mounting hole so it can be placed on most tripod speaker stands with 1-3/8" post