The DW 5000 Series Single Chain Accelerator Drive Double Bass Drum Pedal (DWCP5002AH4) has a gripping Tri-Pivot Toe Clamp, and a Dual Bearing Spring Rocker, making the 5000 quicker and more responsive. These pedals feature aluminum hex shafts, pedal plates and linkages, 101 two-way beater, built in spurs, and a single chain drive.