DW's 5002AD4 double kick pedal gives you all the features that made the 5000 Series legendary among drummers worldwide. The 5002AD4's Accelerator Drive system creates an indirect relationship between the sprocket and footboard for maximum velocity and excellent sensitivity. You'll love the improvements DW designed into the 5002AD4, such as the innovative rubberized Tri-pivot Toe Clamp, a textured rubber grip pad on the base plate, and the Dual-Bearing Spring Rocker that serves up silky smoothness