Features: What do you do if you have a speaker cabinet that does not have a built-in speaker mount socket; but you'd like to use it on top of a tripod speaker stand? Simply install a BMB-200K to the bottom of the speaker cabinet; and you're set! The BMB-200K is an external mounting bracket for speaker cabinets that do not have built-in speaker mount sockets. It mounts on a flat surface with included installation hardware.Ultimate Support BMB-200K Features:External bracket securely mounts any speaker cabinet with a flat bottom on a 1.5 (38mm) speaker stand tube.Measures 4 x 6All hardware for installation includedGlass-reinforced polycarbonate fitting holds up to 100 lbs.PRODUCT SPECIFICATIONS:BMB-100K Specs:USS Part Number: 10766Tube Size: For use with 1.5 (38mm) speaker stand tubesDimensions: 4 x 6 (102mm x 152mm)Weight Capacity: Fitting holds up to 100 lbs. (45.5 kg) Model: BMB200K Manufacturer: Ultimate Support