A little adapter to allow you to mount a 3/8"-16 standard microphone mount to a 1/4"-20 standard tripod. Print both pieces, install a 3/8"-16 x 1/2" bolt in the base, install a 1/4"-20 nut inside the spacer in the bottom of the base. Glue/epoxy the whole thing together being careful to protect the threads. The parts fit tightly together from my printer, may be slightly looser on others.