The 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.   Features: Delta Ball-Bearing Hinge Dual-Bearing Spring Rocker delivering ultimate smoothness. Tri-Pivot™ Toe Clamp Non-Skid Rubber Grip Delta Ball-Bearing Hinge: DW's state-of-the-art lightweight aluminum design that incorporates ball bearings at both sides. Dual-Bearing Spring Rocker: The spring having the ability to rock back and forth with the pedal provides ultra smooth performance. Tri-Pivot™ Toe Clamp: DW's Unique Tri-Pivot Toe Clamp ensures the pedal and drum stay connected no matter what hoop size or angle. Non-Skid Rubber Grip: Have the best of both worlds. Easily being able to position your pedal without it slipping during performances. Get your DW Accelerator AD4 Bass Drum Pedal today at the guaranteed lowest price from Sam Ash Direct with our 45-day return and 60-day price protection policy.