DW 9000 Series Hi-Hat stands utilize a patented Double Eccentric Cam that increases the sensitivity of the footboard in relation to cymbal movement, resulting in a unique, incredibly fast and responsive feel. The Infinitely Adjustable Locking Spring Tension feature allows for precise adjustment to offset the weight of the top cymbal, creating a customized feel. Additional Features: Lateral cymbal seat Folding footboard Ball bearing hinge SM379 locking clutch Swivel legs Includes two upper pull rods - 15" and 21." Note that DW products are not available for further discounting online. For additional information, please call 888-566-6123.