Gibraltar SC-CMBRA Medium Cymbal Boom Ratchet Assembly Cymbal boom arm with attachment clamps fit onto most cymbal stand boom rods, floor tom legs and many tom mounts Mount cymbals efficiently around your kit Holds a splash or crash cymbal and fits 3/8" to 1/2" boom rods 12" boom with standard tilter Holds a splash or crash cymbal and fits 3/8" to 1/2" boom rods