HP30TW Standard Double Bass Drum Pedal Chain Drive. Spring Tight locking spring tension assembly. Utilizing the same offset cam shape as the Iron Cobra 900 Power Glide, the HP30 offers increased power and speed with an easily adjustable beater angle – a feature usually found on top-of-theline pedals. Offered with the DS30 beater, two different sounds can be achieved by rotating the beater head: the felt side for a softer, controlled sound, or the plastic side for a louder and punchier sound with more attack. Please see our other listings for additional bass pedals, as well as related beaters, parts, and accessories. Dale’s Drum Shop is an authorized Tama dealer. A Drummer will respond to you promptly. Tama HP30TW Double Bass Pedal.