Among the improvements to the new 5000AD4 pedals are a Tri-Pivot toe clamp that includes 3 self-adjusting rubber-coated pads that securely anchors the pedal to a variety of bass drum counter hoop sizes, a Dual-Spring Rocker that improves the feel and recoil of the pedal and a non-skid rubber pad under the base plate designed for wood, carpet and other playing surfaces.