Sound Percussion Labs Velocity Double Bass Drum Pedal. Up for sale is a used Sound Percussion Labs Velocity Double Bass Drum Pedal. The item is in good working condition but does show signs of wear and use. Please see photos for a closer look at the item’s condition. There may be marks of wear and tear on this item. Don’t miss out on this great deal for a quality double bass drum pedal! Sound Percussion Labs hardware is affordable for metal drummers. Velocity model with chain drive for speed. Suited for double kick techniques. We use trusted courier services to ensure your product reaches you unharmed. For guitar cases and cello cases, we reduce the use of packaging by wrapping the items in shrink wrap and padding, the corners and sides with foam padding. We are here to assist you. Listing and template services provided by inkFrog.