STANDARD DOUBLE PEDAL Standard Twin Pedal 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.