Designed for sure starts on any type of surface. Slightly wider pedals allow for a wider stance if preferred. One piece, sixteen gauge steel with no loose parts to misplace. Rubber faced pedals. Sixteen needle spikes eliminate any possibility of slipping.Replacement Pedal Snap Lock: P41404Replacement Pedal Pad: P41403Please call in to customer service at 1-800-637-3090 to order replacement parts.