DW 9000 Series Hi-Hats 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. ***This item may ship direct from the manufacturer. Please contact us for estimated delivery if needed.***