All the heavy-duty features associated with the 9000 Series hardware line come standard, including heavy-gauge steel tubing, integrated vise memory locks, and lateral cymbal seat adjustment. The 9550 comes with an auxiliary pedal, MG1 and MG2 mounting clamps, and a universal linkage with two extension options. The 9550 Universal Hi-Hat System represents the latest advancements in hi-hat technology. Using DW's universal linkage assembly, the 9550 delivers lightning-fast response and a smooth, effortless feel. It can be placed on either the left or right side of the kit and is versatile enough to be used as a multi-position primary hi-hat or as an auxiliary hi-hat for secondary hat sounds or effect cymbals. Specifications: [1 inch upper tube] [1.1/4 inch base tube] *1 Features: Highest quality remote universal hi-hat stand with auxiliary pedal, heavy gauge steel tube universal linkage, integrated memory lock and lateral cymbal seat