DW Cymbal Arms are perfect for adding cymbals to an existing stand by either stacking them on top of a primary cymbal with DW"s Straight or Offset Cymbal Stackers, or by using a combination of DogBones or Mega Clamps to turn your single cymbal stand into a multi-cymbal stand. Note that DW products are not available for further discounting online. For additional information, please call 888-566-6123. 1/2" boom cymbal arm in 3/4" x 9" tube